This one hit home with me. Having every waking hour consumed with obligations - fun or not - gets draining after a couple years. I wish my friends didn't get mad whenever someone says no to something, and I find myself regularly contemplating the merits of going off the grid to live as a mountain man.
Someone asked me once what the most important thing I ever bought myself was. I thought about it and said financial independence. I think that independence is as much a choice as purchasing a house or a few cars, and a heck of a lot more valuable (at least to me).