Asklemmy

I've dome Ashtanga and Hatha Yoga. Hatha is the most accessible, though there's a huge range in quality and difficulty in classes and it depends on the instructor.

Don't bother with Ashtanga unless you're very fit and flexible. I've never done Bikram/Hot Yoga, but check it out if it interests you (I'd personally try Hatha first).

Anyways, imho, yes, Yoga is worth it, but it obviously isn't for everyone. Most classes I've been to have a meditative and mild spiritual aspect to it while building balance, moderate strength, and of course, flexibility.

I've always been an active person in various disciplines in the past including bicycling, running, strength training, calisthenics, and court sports. Yoga has always been a nice experience in the way it incorporates meditation with movement and stretch, and it complements many other disciplines nicely.