As a person who is a freelancer and also employs freelancers, you're right in a way. But in another way, you have to admit it's probably not OK to just say "Hey guys, off for two weeks to write a blog post, oh and if I decide to do a a few hours of time when I feel like it, you better pay for it."

It's just not realistic. Like the guy above you said, it comes down to time and I can sympathize with that. But to imagine you always have someone on hand right there willing to pay for your hours of work is where I am like "ok, wait, hold on."