Ghengis, at my gliding site, we have a planning condition that precludes powered aircraft, other than glider tugs, except in emergency. So No, we do not welcome visitors who just want to add it to their logbook collection or visit a nearby friend. It would be illegal for us to, and we have already had many visits from the council enforcement officer, and more than one enforcement notice in the past, when they think we have infringed some condition or planning rule.
We have, however, welcomed in the past: 2 Flexwings who encountered bad weather and turned back to us - we fed, watered, and warmed them up, until they were happy to continue; then a chap on the way from France to Scotland, landed here late – we gave him a bed for the night in our caravan/clubhouse (all we have – the council refused planning permission for anything better); and sundry other people with varying degrees of urgency or distress.
It has nothing to do with a snobbish attitude that gliding is superior to power.
Chris N