I did some gliding as a kid and thoroughly enjoyed it.
I also fancied doing a little more around my instructing job and I guess I might spend a dozen days a year in total.
However the cost of membership was ridiculous
£261.00 (+ £30.00 joining fee)
So I didn't bother
Its only 55 quid membership at my fixed wing base and that gives your reciprocal landings at about 10 other fields.