Why do you think some players take forever in Live chess?

I play 30 min games (I'm not good enough to play blitz) and more than once I've come across players who take forever with each move and end up losing on time. In your experience, why do they do that? Because I'm finding it extremely annoying.

I am sorry. I will try not to masturbate during my 30 minute games in the future.

There are three categorical reasons people do this:

Existential

Paradoxical

And Religous

Each has its own set of peculiarties and very few are qualified to speculate on all three, although some posters here may be able to elaborate on one of the categories.  People spend years analyzing this phenomenon on and off, and usually just wind up getting frustrated.  But if you really want to understand, persist!