Edit: If you look, you can find low-milage TJs that are a fraction of the cost of the 2012 models... but you can't go wrong with the 2012 and the new engine... just one thing to consider before modding your Jeep, find out if you're insurance will insure a modded Jeep.
The 4WD does help in winter. I did a winter in the TJ with only RWD (removed the front driveshaft), with no backseat and the Goodyear MT/Rs. Add in the fact that my axles are 4.10:1 and I can definitely say that it was an interesting winter!
Granted, the solid front axle is only an argument for off-road use as the ride quality is harsh... and the fuel economy is either ****** or really ****** (depending on tires, gearing, engine, etc.).
So aside from buying a Jeep to build and take off-road, there isn't a lot of practical reasons to buying a Wrangler.... but there's still something about owning a Jeep that you just can't ignore. And you don't have to take the Jeep on the trails to feel it either. Doors off, top down, stereo cranked....
If the OP is gunning for a wrangler, I suggest taking one for a test-drive