I'd say so. I started gliding at 15 and it's been one of the best decisions I've made. Cheap and fun flying, great junior schemes and plenty of scholarships available for grabs.
You'll also find a good amount of commercial pilots fly gliders or have done in the past. Gliding, in general, will make you a better pilot, especially for stick and rudder skills and decision making. Also looks good for CV's and flight school applications.
I was in your position before, so any questions feel free to PM me.