I've wrestled with this for a couple of weeks now. I went ahead and ordered the 3G model. I figured if I was wrestling with the issue, then I may have some regrets if I don't get the 3G model.
I read someone say on one of the forums that if you didn't have 3G with your iPad, it would suffer the same fate as the iPod touch, where it will mentally be a device that you keep at home and never take with you, due to the limited connectivity. I have to certainly agree with this, as my iPod Touch stays at home. I don't really think of it as a mobile device, and I've always said, if only they'd make an iPod Touch with 3G capability.
So I started to think where would I use this 3G connectivity that I don't really think about using it right now. I started to think of my kids sporting events, perhaps an afternoon at the mall, park, Disney hotels that charge $10 a day for wifi of which we go quite frequently living in Florida, parents house (as they have no idea what their wifi password is), and of course vacations.
My wife has an iPhone, but I'm not really interested in doing the tethering thing. Having to rely on another device to accomplish connectivity seems to defeat the purpose of having the all inclusive device such as the iPad.
And at the end of the day, if I never used it, it will most likely hold its resale value a little better than the rest, as the 64GB 3G iPad is the top of the line and will move to mediocre status.
I can't say that I won't change my mind again, as there is certainly compelling arguments for the wifi version, especially in terms of saving $140, but this is where I am today. And I did make the cutoff on pre-order to have it shipped at the end of this month, in roughly 10 days.
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