if my skin was somewhat flawless i would definitely wear no foundation, and would just wear mascara and eyeliner. but..unfortunately i have really really bad skin (acne) and i cant go without my concealer/foundation!!
i also wear mascara and eyeliner everyday..its just routine! i love eyeliner, but i don't wear it inside the rims, otherwise my eyes would look too small!
i dont mind doing it..especially when i'm going out..i would use maybe blusher, eyeshadow or lipgloss aswell.
i don't think it looks caked-up (i hope haha), i just like to get my skin looking kind of normal/even, then just like to enhance me eyes.
i suppose the main reason i wear it is beacuse i'd feel insecure without it, but even if i did have flawless skin, i would still enhance my eyes.
i absolutely love it haha, n agree with what some people said about it being an art! its just like clothes or an accessory, some people experiment with their style and their outfits everyday as some people do with makeup, i suppose.