Why do people like to suck toes?

These people find toes really sexy, it can't really be explained in Words. Look a this, don't you think her toes are nice shaped?

http://i24.Photobucket.com/albums/c27/hiikun/Emma%20Watson/Emma_Watson_Feet_01.jpg?t=1244429979

@above me

ya, they are; how old is she?