How important are achievements/trophies to you when buying a game?

[Ultr]

Before Trophys I really played my games a lot, but cared more about the story than anything else.
Now with the trophys in place I see myself playing even more and doing lot more gameplay wise and enjoying every/more aspect(s) of the game.

BUT

I NEVER buy games based on how easy it is to get them
But I read them after my first playthrough, and then go back to them to get them :) not everytime but often