To some extent, 'life begins' whenever you want it I guess.
It's just that in my 40s, I don't have the energy/ balls to go for it. It's biology - my knees crack when I bend them, I always feel my body can't make a decent range of movement
Perhaps it's an isolation thing? I had friends then who I could vent to and then move on from it. It really does get harder making friends as you get older - or did I just get lazy?