Enthusiasm is Fading

Destiny was amazing until I hit level 20. I am level 27 now and I'm getting one shot killed in the crucible by level 14 players. How is that possible? I have an exotic helmet with three upgrades waiting for me to find the materials to upgrade with. I have killed Sepiks Prime fourteen times. At least. The Queen's brother is an asshole and I didn't get to punch him in the face. Every legendary engram I find is actually a blue or green item. The Queens missions are super difficult even for a level 27 titan. I bought an exotic weapon engram from Xur and it was a rocket launcher. I hate rocket launchers. I never find ammo for my rocket launcher. Which I hate. I can't trade my rocket launcher which I hate. All factions have the same gear. Gaining reputation in a faction is SOOO tedious. The maps are small and repetitive. Remember Aion? Those maps were huge and I got bored. No in-game chat? *sigh*