Well I can see you never defeated crota in hard nor skolas. You probably got bored because you most likely just did patrol and strikes playlist. Did you ever try soloing crota, the nightfall or maybe even the weekly before they added match making. Its fun to set up challenges like that, it makes it so much more intense. Also you could've leveled yo your other characters or at least hit 34 on your warlock. I know crucible can be frustrating in the beginning but once you get the hang of it, it honestly becomes awesome. Even better with friends.