Much as I love gliding I'd have to agree.. you can't really go gliding in the morning with plans for the rest of the afternoon; you may finish up in a field, and for that matter you won't make too many friends if you turn up, fly, then toddle off.
On the flipside, I often do precisely that with powered a/c. As for meeting girls, go do something like dancing. In fact if you do both you might discover quite a pool of girls for whom the offer of a spare seat to sit in might be quite a draw.. neatly killing two birds with one stone
And Juno78 has a rather good point.. I can't understand why people who have active interests settle with partners who want to spend their entire life pottering around the house..