I've become very good at certain aspects of creating fine instruments, to where I have a few of the real local pros playing a few of my creations. Maybe someday I'll be good enough to justify owning the instruments I've made for myself - I'm not a hack, and I am hard at work getting better, but the instruments are not limiting me. My "backup rationale" is I'm keeping them in good enough shape that and helping them age and mature gracefully, so that, when I pass on, someone with awesome chops will get to use them.