I wonder about this sometimes - I'm 28, and about to go on maternity for the second time. I'm not planning never to work again but when I do eventually go back (not after a year, I'm stopping for a few) I want to be doing something I'm actually interested in, and I've always loved makeup.
The thought of returning to office life really doesn't appeal - and even if the money's crap, after a few years as a SAHM, even a small amount will be a bonus so I'm not worried about it from that point of view.
But is it too late?