I went from 5 day to 4 day about a year ago. Absolutely worth it, even with the drop in pay. I don't have the artist lifestyle, but I'm able to support my family on my income even so. That said, note that it's not a panacea for burnout. My current company is currently thrashing after layoffs and reorgs and general leadership incompetence, and I feel the siren call of quitting. Even in this market.