[GuyWithNoLife]

Once you get used to having the internet in your pocket, it's difficult to imagine not having it (though not impossible). Being able to search the internet for companies, addresses, phone numbers, etc. from my phone has helped me a bunch of times (not to mention settling bets). Having my work email is a must for me. Other than that, using Google Maps or Live Search helps a lot when looking for locations (or anything while traveling), and using MusicID to identify songs that are playing on the radio/jukebox is always nice (MusicID was ripped off of a cingular device but works with any Windows Mobile phone, and requires data usage). Instant messaging is available if you're into that, plus all the social networking sites, etc.

All the benefits are pretty nice, but the only thing I really require is email (for work, even). I'm on Sprint... if I was on Verizon and not changing carriers, I could live without all the extra benefits of internet to save that $45 a month.

...unless I needed to tether and use it for my laptop to get online from the road (or even from home) on a regular basis. Then I could justify it I suppose.