That could've definitely ended way worse than it did, so thank your lucky stars the car held you in tightly.
I had a similar accident where my car hydroplaned at around 50mph, luckily there was a median wall on the highway and I didn't flip. But my car was banged up real good. In my case, I wouldn't accept letting go, so I got her fixed. But as suggested above, I would first run through the insurance and see how much help you can get from them. That'll probably be the biggest deciding factor as to which course of action you take moving forward.
It's probably not worth fixing unless you have a hookup for a body guy or can actually do the work yourself. I agree with others on here, that the best way to go is buying a really nice donor. Get a body style you like, good color combo, straight body, etc. and just swap all the good stuff from that car into the new one.
The silver lining is that you might get coverage and you can definitely take off a crapload of good parts. You can even sell the ones you can't use and fund a portion of whatever car comes next.
At least you're ok and that's what matters. Everything else is just a speed bump along the way. Be sure to keep us posted!