All kidding aside...I know what you mean about the call of nice weather; every May 1st the top and doors came off and every Oct 30th they went back on. I sold my 77 CJ in 2002 to fund my current XJ.
A couple of factors...contrary to popular belief it was getting hard to get some parts for the CJ, especially the quadra-trac. But probably the main reason was comfort. It was my daily driver and was ok when I comuted across town 2 miles each way. After 9/11 my job situation changed and the commute became 18 miles each way, freeway driving across a 5 mile long bridge. The cold air reeked havoc on my left elbow and shoulder, needed to wear a jacket even on the warmest days or the soreness would bother me. the backside...even with recaro seats...the 44 yo backside would get serious car butt. The CJ would wander whenever the speeds were over 55mph.
Every once in awhile I see a CJ or Wrangler running around with no top and I look enviously, then I realize why I don't have one anymore. If I lived in warm weather climes...like AZ or the gulf states I would seriously consider getting one for old times sake...but the XJ would remain my main ride.
Good Luck,
Tom