For me, conditional moves are a must because I just hate the idea of taking two months to finish a match.
A lot of times it just speeds up the game. For example, if my opponent offers me a Queen trade and I accept, I'll throw in a conditional move because his or her next move is obviously to capture my Queen, and I can just make my next move. Rather than having this two-move sequence play out over the course of half a week or so, it can be reduced to one day by the use of conditional moves.
And the better you get, the moves just get more and more obvious. You attack, they defend, and so on and so forth.


I can not imagine any skilled player of the game being offended by conditional moves. It is a feature expected on any serious chess site.