I think I would make art on a desert island for lack of any[few] other available outlets. But if I were home, but could never show or tell anyone about what I made ... I think in time I would stop making art, and pursue other "creative" activities that I could share and engage with people.
I've found that if I have just a few peers to engage with about my work ,art, -- then that is sufficient to keep me motivated. But lacking that my production falls off, procrastination sets in, and I do more thinking about making art, than making art.