Well, Mrs Driver and I dumped our customary week self-catering for a (cheaper) week of gliding this year - Mrs D is ab initio and I'm IMC, so a bit diverse.
We averaged 7 flights a day each. Longest flight I had was just under the hour. Not a moment's inactivity for either of us the whole week.
We enjoyed this so much that I booked a day's one-to-one which gave me 13 flights, and we both booked a further week during August.
Plus points
VERY sociable - you actually get to TALK to a wide range of experienced people
Very good for you - lots of exercise and fresh air
Very good for your flying skills
Flying safe and close to other aircraft
Forced into explicit looking-out
Remembering what your feet are for
Every circuit is a practise for EFATO
Spin entry and recovery from surprisingly low heights
A different perspective on weather
Gliding is surprisingly technical these days - The current UK distance record stands at 1200 km in ten and a half hours, and the airframes make the average powered aircraft look like a product of Noah's workshop.
Self-launching - fold-away motors - solar power. Mark my words, in this greener world, we powered flyers need to keep an eye firmly on what's cooking in the gliding fraternity.
SD