I have always practiced engaging the front end of all my trucks with auto locking/unlocking on a near daily basis. Since I live on dirt roads, I simply engage to the pavement and re-engage when returning home. On my manual hub equipped trucks, I regularly dismantled, cleaned and greased the hubs and generally left them locked all winter due to snow and ice on the roads.
As for “use it or loose it,” I heartily agree. I’ve seen several times people brag about never engaging their front end, needed it and got only broken parts for their efforts to engage.