I feel your pain, brother. I do a bit of writing myself and know all too well the depression and lack of self-worth that follows after you spend so, so many hours of your life creating a thing that might account to nothing. Only thing I can tell you is if you stop loving it, then you should maybe take a break for a while. Or maybe just scale back your projects to short stories. Creation is a tough thing to do, even if creation is the easiest part.