If the game is good, then I don't necessarily mind a game having an easy Platinum trophy. Also, trophies aren't exactly what would convince me to buy a game, because if that were the case, then I wouldn't have achieved some of my hardest or longest Platinums such as Killzone 2, Resistance 2, Batman: Arkham Origins, Call of Duty: World at War, Diablo III: Reaper of Souls, and even Battlefield 3. Granted, I have some of my easiest Platinum trophies like Megamind the Video Game, which was a rental because I had nothing better to play anyways, but in general, as long as a game is great, I don't mind too much.
Currently, I'm working on the Platinum trophy for Killzone Shadow Fall, which is infamous for having a long platinum that takes even takes longer than say Resistance 2, but no where near as difficult as Killzone 2, even after Guerilla decided to all Trophy Progression on Online Botzones, which not only makes some of the hardest/longest abilities to get legitimately easier, but also boost your stats if you somehow believe a KD ratio even matters anyways (Holy run-on sentence, Batman!). Just need to finish the Stun Blast ability and I can finally say I have all Killzone Platinum trophies, until Killzone 5 comes and I still have DLC trophies to get anyways. Afterwards, I'm going to finish Star Wars: Battlefront 2015, and it's not as bad as the trophy rarity would state on PSNProfiles, actually, it's probably easier than Killzone: Shadow Fall.
On the extra note, I'll never allow Hannah Montana: The Movie: The Game to touch my library, I rather not be called a trophy whore for having the game tainting my profile.