Interesting Quandry
You have a difficult dilemma! I too used to fly gliders, in fact my last solo was in a Pilatus B4 at the Essex and Suffolk Gliding Club in about 1995. About that time I met my wife who introduced me to sailing. The gliding went by the wayside. We sailed with her parents and then bought a boat of our own. We are very lucky and sail in an area where we can sail for 16 hours and be in Holland or for an hour or so and be in a beautiful unspoilt anchorage with a glass of wine in hand.
I wouldn't agree that it is easier to find time to fly than it is to sail. Many is the time we have taken the boat out for half an hour or so just for the pleasure of it and without going anywhere (except there and back!) But you own a boat so you probably know that...
We have just sold our boat. A growing family meant we didn't use the boat so could not justify the expense... and what an expense. It is only now that the bills have stopped coming in that I realised just how much we were spending. A years mooring / insurance / running costs would easily pay for me to do my NPPL, or charter a yacht in the Med for a couple of weeks.
So would I go back to flying instead? Well, yes and no. I really miss the flying and would love to get back in to it, but gliding takes up so much time away from my familly that there is no point going down that route until our children are old enough to come to the airfield and enjoy it, safely. So what about power? More tempting, but i am not sure that I would want to own my own aircraft and have all of the expense of keeping it in the air, so, for me perhaps a flying club and hire by the hour....... although I did see a really cheap motor falke for sale the other day.....!
David