The inclusion of trophies does not influence my decision to buy a game, and I certainly don't brag about which trophies I've obtained (not that I have a great deal to brag about). However, I do think it's fun to pursue some of the trophies, especially the trophies that take you off the beaten path. I also think it's funny that you can generally tell how much of a life people have by how many PS3 plats they've obtained. It's crazy how much time people devote to such things.