I don't think it ever ends, it'll need a repaint, or a whole new "Idea" will attack you in the middle of the night and not let you get back to sleep!!
As for raising kids in your shop, yes it can be very rewarding!!
BUT, ASI H8 BEWARE!!!
I raised 2 boys who are now both grown up and live out on their own;
AND I AM STILL LOSING TOOLS FROM MY SHOP!!
I am about ready to hook up the ELECTRIC FENCE CHARGER to my tool boxes
to KEEP'EM OUT!!!
CAPT