i tinted mine for the following reasons: privacy, interior protection (from UV rays), i get headaches from bright natural light, protection from break-ins (the tint prevents shattering much like the windshield does so it's harder to get into), and i think it looks nicer
that in mind i would also say that i have 5% all around (no eyebrow), and i would not reccommend it to anyone who either drives at night or lives in a town that gets much of its revenue on police checkpoints that you drive through all the time.
(knock on wood) i have yet to get a ticket for window tint on this or any other car i've had illegal tint on. but i also don't bring a lot of attention to myself whilst driving and i think around here that would be more of a secondary ticket item, like they'd rather pull you over for speeding then give you a tint ticket instead of just pull you over for tints.