This is why I would never give up the day job.
Yes, you miss a lot of your DC's life, but I think I sort of need to have a life of my own, too, in order to remain sane. Having a life where DC's are the centre of literally everything I do would be horrible for me - but to each their own.
Only way I'd give up my day job would be if my hobby took off, and I'd earn more from that than my day job, and could work from home. That's sort of wishful thinking, but I do hope one day it will come true.