I'm not sure if I would have ever sent them. There was a time in my life when I might have, but not anymore. I'm kind of a prude now.
If you sext, you'd better be ready for it to end up in the hands of someone you'd rather it not. You sent it out, and there are any number of ways that it can be seen by other folk. But really, who cares? Everyone is naked. The viewer is the one with the responsibility not to be an asshole. Pretending that sexting is somehow bad, or that it shouldn't be done, makes you an asshole.
I have a daughter. By the time she is this age, sexting will likely be supplanted by something even more titillating. Whatever.