Aside from what it teaches you there is simply the indescribable degree of peace that can be achieved on a sailing vessel at sea. I guess a combination of hard work and the seemingly infinite expanse of the sea - the profound solitude - that does it for me.
I don't necessarily love the sports per se I love the stories behind them. Also in a kind of perverse way I like to study what it does to us why we care so much. It's caring about something that's utterly meaningless.