Most of the advertised experiences here come naturally as parts of passion-formed communities.
The down side is that it really isn't really possible to break into such communities in a meaningful way without having already done them for years before you've turned ~18-20yo.
Whether it's team sports, rock climbing, surfing, music, etc. You can start [skateboarding] at age 25, but you'll never be a real [skater], or have the experiences that came along with spending the formative years of your life dedicated to it. Replace [skateboarding]/[skater] with your hobby of choice.