Several reasons.
1 Don't like the short wheel base of the 2 door. Out west the 4 doors don't end up on their butt when climbing up waterfalls and rock faces. 2 doors have a tougher time climbing stuff because of short WB. They can't go where I can, I've seen it, they will flip over backwards.
2 The LJ has rear over hang and is the "old model", didn't want that.
3 When camping I can sleep in the back and haul around stuff for camping like wood when you go to the dunes.
4 I like the look of a 4 door when lifted more than a 2 door.
5 40's look better on a 4 door.
when you lay down the rear seat, it's not exactly flat, so I took it out, gave me more room and took out 100+ lb.s