This is tough. A job is about making a living, no doubt. The problem becomes when making a living is sucking the will to live out of you. A good boss and team helps, but if at the end of the day you just have enough energy to sit and drool....are you making a living or not? I'm not so sure. Also, at 45 if it takes 5 years to build you still have time for a ROI. If you wait, that time diminishes and so does your ability to put the hours in....entrepreneurial activity is not and old mans game.
I've owned businesses before, part time ones, but still the same...and butcher, you're right. People have no concept of how much work it is. Corporate schmucks think that money just comes in....It certainly doesn't even if it looks like it does. One day I had a show, and had $1700 in 4 hours of sales. But, from setup to tear down took 30 man hours labor, and about $500 in expenses before we sold bag 1 of kettle corn. Nor the $1000 damage that came out of my pocket the week before from an uninsured accident, and 72 man hours of labor, and $1300 in sales....so much for big profit. All in all that was a money maker, but a lot of work for a low hourly return. Overall, we did OK....but definitely not a get rich quick scheme it looked like....
The thought of part time barber shop, also ties into the energy question....see my first paragraph...sacrifice to be sure! Also, The hard part is finding a hiring shop that wants an entry level barber with very limited hours of availability, who might be called away at any moment, and has no guarantee of being on time. The surprise 2 or 3 our emergency at 5pm isn't uncommon. Serving two masters has a LOT of obstacles.
Food business...agains, doing both my current job and food is nearly impossible due to the life sucking nature of IT...the on call and immediate availability precludes me from so much! All of the foods I am looking at are low cost, high profit with little waste. How did ray croc do it? Is it even possible today with oppressive regulations and competition with Madison Avenue? Ken-taco-huts are on almost every other corner? But they all have patrons. Dunkin donuts is still adding stores. There is opportunity....buy at $25 a sq foot, for $1500 sq foot, you're talking SERIOUS coin....
There has to be a way to do this....without selling your soul to schitibank....