I think it is like this:
The descriptive system evolved and is more natural and psychologically satisfying.
The algebraic system was designed and is more logical and less prone to ambiguity.
The two most civilised nations in Europe (Britain and Spain) held out against the algebraic system the longest.
The (new) publishing world is now figurine algebraic and that's that. Glad that's over.
There was nothing seriously wrong with descriptive and it makes better practical human sense because it is oriented to the player making the move rather than an abstract model of the board. It doesn't matter which color one is playing, the notation is the same.
I think is actually more natural and easier to get right in practice than algebraic where one must take into account which color one is playing. When playing black it almost feels like going backward notating e5 to e4 instead of P-K5. Being a geezer in his dotage who came into the game seriously around 1975 as a young adult, I learned descriptive first because nearly every book I could get was written using descriptive. It is interesting how some now have a problem with the player oriented model. I took up algebraic soon after, without issues or rancor, starting with my first recorded game. I have never recorded a game in any notation except algebraic. I can't tell you how many times I wrote down h1 for h8, switched e4 and e5, etc under pressure during games at the start. (Recording errors are made all the time regardless of notational system. Ask anyone who has had to edit a tournament bulletin. I will bet that even lifetime algebraic-only players occasionally write e5 as black when e4 is correct under stress or time trouble carrying the habit over from the games with white even without the "handicap" of being familiar with descriptive.)
The supposed virtues of algebraic are mostly abstract. It requires fewer characters to be written, in a few situations it is less prone to ambiguity, it is certainly better for computer chess applications, and it was the fashion outside of the English speaking world, Europe in particular where FIDE, and the Soviet Union and the other Eastern Bloc chess powers, existed with much greater chess gravity than the English speaking nations. Even at that it hardly universal. Alternate symbols are allowed for national variants in piece names (or were the last time I read the official rules, a long time ago) such as S for knight, L or F for Bishop, D for queen etc (solved in print by the use of figurines). And one is allowed several levels of abstraction, starting with the utterly inhuman square to square with no piece designation (I did that for a while) with no possibility of ambiguity, long algebraic with a piece (language dependent) noted with both squares, and the concise form with minimum information, piece (or staring file for pawns) and destination square only unless there is ambiguity. I have also seen pawn capture variants like ed and exd5 both used.
One is allowed preferences according to taste or habit, but a really heated advocacy of algebraic as if anyone using descriptive were a retarded rube is just a kind of pretentious bigotry. Find some other and more significant way to feel superior if you must. In any case, descriptive has been displaced long enough that the argument is dead and no new books use it. Now if those who revise the old books could stop making notation conversion errors and also mangling the book itself in many cases (Fischer's 60 Memorable Games comes to mind) we could be done with it once and for all outside of the domain of collectors. (Personally I do not see the burden of retro-reading descriptive to be such an obstacle that we even need to convert older works such as Fischer's 60 Memorable Games, Alekhine's Best Games etc. Fischer's book will be much less pleasing to look at rendered into Informantese. You are chess players, you have a brain, get used to it and study. It's not really like a foreign language you know, its just not that big. If I can learn enough Japanese to use Go problem books in the original (and it does not take much) you can read descriptive. Besides its all in Chessbase now, just get the notes out of the books. If you can't do that, you are not serious enough. And the old books can be found at bargain prices too.)
It is similar to the debate over going metric. The argument for going metric is far more compelling (including the elimination of the need to do arithmetic in bases 12 and 16 in a base 10 world, as well as streamlining international product handling) than the argument for algebraic. However the costs and inertia against metric in every respect is orders of magnitude greater than that for chess notation which is why one transition is nearly done and the other barely started. Certainly in real estate I do not expect the fine old unit of 10 square chains (derived from medieval agriculture as a bit of land one furlong long, one chain wide. Surely you know what a chain is don't you? It's 4 rods! What are they teaching our young people these days?! ) better known as an acre to be replaced with square meters or any such thing in my lifetime or even that of my children such is the sheer weight of cultural memory and the immense bulk of legal records and predecents, and money. It is a hard transition. Ever have the experience of having someone tell you that so-in-so tossed an implement (like a shot or discus) some figure in the other system, and you felt like asking him "But how far did he throw it?". Track and Field news tried going metric for a short while and went back when, after a much effort, even a staff of dedicated followers of world athletics working with it every day still kept asking that question.