When I was in college and started dying my hair and whatnot people used to criticsize me "you had such pretty hair, why'd you dye it", etc. Now that I'm nearly 40 noone questions my wearing makeup, I think its just assumed women my age want to look younger so we wear makeup.
I don't wear makeup to look younger (that's what eye cream is for, haha). I do wear makeup to look "myself". Fun, funky, expressive.