Well put, this is very similar to how I feel. Getting people together to play and keeping a group together in the long term is notoriously hard; I've spent far more time creating adventures/worlds and tinkering with dysfunctional rules (I usually play D&D 3.5 so there are plenty of them...) than I have actually playing. There's only so much time you can spend tinkering with a single character, but an entire world/game system can be a full-time hobby.
I do like to play as a player now and then, for a change of pace and to remind myself what the game looks like from the other side of the screen, but by choice I'd spend at least three-quarters of my playing time GMing.