I have a simpler cell phone - I barely even text on it. Smart phones are neat in theory, but one major drawback I've noticed is that many of them seem to be extremely fragile. On several occasions, I've dropped my clamshell-style phone hard enough for the battery to fly out, and it's still alive after almost four years. I've seen a LOT of smart phones, on the other hand, with cracked screens. (Though of course, it's always best to be careful with one's electronics.)
Besides, if I'm going to be cruising the internet, I'd want a bigger screen to work with. My brother has a tablet that's really neat - I'd go for that long before I'd go for a smart phone.