Hahha, that's great! He has no clue....
Fortunately for me, my husband is a techno musician (as a hobby, not professionally) so I make messes with cloth, and he pollutes the air with noise, and we happily ignore each other for hours and hours at a stretch! We each have our own "studio" and we both keep our noses out of each other's hobbies. I don't judge when he spends crazy money on some fancy software or electronic noise box and he doesn't judge when I spend crazy money on a mountain of fabric or new machine. (We have separate finances, too.) When I finish a quilt he makes appreciative noises, and when he finishes a song I make appreciative noises, and so far we're living happily ever after! (Been together since high school - 20 years and counting!)
Our dogs let us know when we've been locked away too long. That, and we get hungry, eventually! LOL