I had looked into it pre-children/while pregnant because all of my single friends (and childfree) used to say "It's never EVER the same 'down there,' which, of course, worried me a LOT because we had great sex and I didn't want it to be ruined. So I read all I could both before kids and while pregnant, and it turns out, I didn't need to worry, even after having two children. Of course, I didn't have any tearing or cutting either, so that very well could make a difference - I don't know.
Well, for those who don't want to go that route, I suppose there are always the dreaded kegel exercises...lol.
I actually think there is hope for others out there! I think it's sad that people's sex lives are ruined post-children. It really doesn't have to be that way.