First of all, no one wasted time. If you did what you wanted to do, then your time could not have been wasted. No one can take that away from you. Second of all, obviously nothing will happen to trophies. The Vita has trophies, yet the PS4 won't? Use common sense.
If PS4 has Trophies, and if PS3 Trophies carry over, PS4 had better actually make earning them worth something.
I miss the days when completing a challenge gave you a bonus weapon, or unlocked a new level, opened up a cheat menu. Instead, you hear a "BEEP" and a pointless number on your PSN card slowly increases. How glorious.