Chains don't like me

Today, I went out for a 4 hour training ride on the Divide Loop, and POP! Again? After breaking my chain at the last race, I was pissed. First ride on a brand new chain and I tore one of the links apart. Good thing I was carrying tools.

Now, I wish I could say that I'm just so strong, my chains can't handle me. But even when I spent 6 days a week in the gym, weighed almost 200lbs and was MUCH stronger, this didn't happen. In the last year, between the road and mountain bikes, I think I've broken 5 chains.

I've seen the belt drive systems coming out, but they are only for single speeds at this point... what's a dude to do?