I've heard the same argument: "I don't need a phone with all that crap." For people who only want voice communication, that's great, but some people miss the point: many of us don't buy "phones" to yak at each other, but rather for mobile computing which happens to let us make phone calls as well. I was ready to ditch my last cell in favor of a Galaxy tablet with a bluetooth headset, but they ended up being crippled in that respect (and massively expensive), so I went with the Galaxy S instead.
My Android device isn't a "phone" any more than an automobile is a giant mobile cigarette lighter. Yes, you can light a cigarette with it (and also listen to radio and keep warm in cold weather, etc.), but the primary function of the machine is for transportation. The primary function of a "smartphone" is as a portable Internet-connected computer.
To be fair: it is kind of pathetic that I can't wait 20 minutes to check my email, etc. while I'm walking or riding the bus, but there you go. :-/