Big +1, work on something that bothers you in your personal life or something that interests you in your personal life. It will always undoubtedly be more fulfilling compared to simply "working for the man."
No I will not be on call, no your computer turning on isn't a emergency and I will not drop everything to hit the power button.
If they don't like the terms, they're more than welcome to pay double my asking and pay a monthly retainer.