There are plenty of games here that only use the RTP for both graphics and music, and some of them are great, so that shouldn't be a reason to stop. If you have lost your passion for this, then that is a reasonable one to put it on the back burner until you get it back, or you divert that passion into something else.
If you never come back to it, fair enough, I hope you learned a few things along the way and that it was enjoyable at least in part,