My dad towed a pop-up into a CG in the mid 70's, never left. He has NEVER towed the last couple TTs; dealers delivered them right to his site. He liked the area so much, he eventually sold his house near the city, moved just outside the CG---can take his golfcart into the CG anytime he wants.
When dad put the trailer there, it was just a yearly fee. Now, my brother has the trailer, it is a yearly fee plus a monthly electric bill.
I thik that CG has 25-30 "weekender" sites, and over 200 permanent. Being in Pennsylvania, they are used mostly 3 seasons (water turned off in winter), but I know several guys that hunt/snowmobile out of them (one bathhouse remains heated & has water).
People take "ownership" of their sites...all kind of personalities on display. When I was a kid, many Moms & Kids would stay when dad went home for a week of work. I spent every weekend, and many weeks of my childhood summers there. Now, with both parents working, the place is pretty empty during the week. (we just spent 10 days in the weekender sites---full Fri-Sun, empty Mon-Thurs).
The places are like having a beach house/vacation home. No reason to move it if you do not want to. I prefer to move ours, see different places, meet different people. Yet, I still venture back to that CG at least once a year.
If you do NOT plan on using it EVERY weekend, I am sure other options are available. We have several CG in our area that provide onsite storage. Monthly/yearly fees apply. When you want to use it, a reservation is made for a camping site---the owner uses his tractor to put the trailer on the site.