4wd is one of those "best to have and not need it than to need it and not have it' things.
I only needed 4wd a couple times on my old place. Didn't have it on the truck but I guess the truck and tractor I pulled it out with combined to = 4wd.
My old place was flatland flood plain. I could drive anywhere on 99% of the time without getting stuck, but was the kind of place that had a hardpan on top and if you ever broke thru it, you may have to pull the truck 100 yards before getting back up on top. Down under, had no bottom. I broke thru with my old Case 480 backhoe/loader combo ONCE, and it took 2 tractors, a pickup AND the front bucket tied to a cable with the other end to an oak tree to get it up & out. Baby pooh type mud under the hard top.
4wd reall wouldn't help much as my neighbor found out the hard way more than once driving where I told him he couldn't.
"No worries..I got 4wd!"
"Hey Don, uh.. bring yore tractor..I'm stuck and stuck good!"
Around here tho, you'd have to look long and hard to find a used 2wd. Lots of hills and rocks.