I can confirm this in broad outline. I've been lucky enough to go on a couple open-ended road trips. I knew going in that it was unlikely to "fix my problems", but still entertained the hope that it would do something along those lines. It didn't. I was approximately the same idiot after as I was before.

Not that I don't want to do it again as soon as possible. There are, as many have mentioned here, other reasons to travel, and I do think the experience has made my life richer.