I have had a business of my own for the last 33 years but I do not work in it - Still own it and it's going strong.
I also owned and operated a property development company of my own (that I did work in for years) so I get what you're saying, it's a lot of work but offers a degree of freedom also.
I work for a very large organisation now and it's bonkers how busy I am...am ai happy doing it? Not really, but I'm good at it and it pays very well. I'm not sure if a change is on the horizon, maybe it is, but for now I'll try and manage the scenario and make it work as best I can.
So anyway, I'd not go as far as saying, I don't understand you', because I understand very well indeed however we each have different levels of tolerance and abilities to deal with things right?