> Hmm, I had thought the upside of freelancing was to make more money, at the expense of doing all the stuff listed here.

No, absolutely not. You won't make more money.

You'll only make more money if you bring other people into the picture, but at that point, you're not a freelancer ... you're an agency.

You have the freedom to work how you want, on what you want, when you want, with who you want, and how much you want. You'll never have that at a job.