Learning to fly will teach you so much more than learning to fly.
By all means try gliders but I wouldn't make a judgement on it until you've tried power too.
I tried gliding at your age and it didn't tick my boxes but 20 years later (too late for me to take it seriously) I got a PPL and have thoroughly enjoyed it.
At your age you should, money permitting, try everything you possibly can so you can be sure to find something that you like to do in order to make a career out of it. Too many people get stuck in a rut early on in adult life and by the time they wake up and smell the roses they're too burdened by responsibility (much of which is probably imagined anyway) to make changes.
Go for it Girl!
