No. It is true I am addicted to trophies, but I do not buy a game just for trophies. I generally rent the games that have trophy support. Currently I have over 29 games for my PS3, but only like 6 of them (GTA 4, LBP, Fallout 3, Dead Space, Bioshock, Buzz, and CoD 5) have trophy support. In fact 3 of them were given to me as gifts. I rent a game for 2 weeks, and if I like it then I get as many of the trophies that I can. The exception would be FarCry 2, because I only played the game 20 minutes and hated playing every second of it due to poor controls and graphics and storyline. Trophies make a game more challenging in my opinion. Especially if you are trying to get a platinum trophy. So I do believe trophies can make a game's replay value increase.