Anyone else not full timing because of the grand kids?

Me and my wife have had RVs for years and always dreamed of fulltimimg around this beautiful country. But when the time came that we were able to we could not bring ourselves to do it.
Last year we gave it a trial run for three months and it about killed us because we missed our grand children soooo much. We had no other issues and loved the traveling but missing the little buggers was the only reason we don't think we could do it.
We tried our best to stay in touch by phone and Skype but the lack of a good hug was heartbreaking. Anyone else feel this same way and if you did go ahead and became fulltimers how on earth did you handle the pain of being away?