keep in mind that these suggested pros and cons aren't going to help you and shouldn't be the deciding factor in helping you decide whether to go into business or not.
for me, going into business for my self was a necessity. I played semi-pro hockey in Germany after jr. and needed income on flexible hours worked. Sure I had a condo and a vehicle supplied by the team, but I knew I wasn't NHL bound, but still loved the game and it brought me around the world. while in Germany I learned about robotic painting techniques from a neighbour in my building who's company was a major sponsor of our hockey league in Germany... I took on an 'interest' in working for him during my rest time away from the rink...
Anyways, I took some of the technology back to Canada and in 2000 set up a shop in Brampton working via contract for Magna painting some of there then 'locally' warehoused auto parts. It wasn't a clear path from hockey to auto paint that was taken... I dabbled in college, coached summer hockey, worked at a few hockey shops, etc... but, the business made the most sense to me. Once set up, in 1 year I developed a newer more advanced system for painting that is entirely robotic... got some patents and really started doing business when I was able to manufacture and sell my technology to other new car part plants around the world.
Sold the business a few years ago now and have been a 30 something retiree for the last few years entertaining a passion of mine in coaching hockey and trying to master it. Coaching so far does not pay well and may never... but, who knows???
I'm certain that I will be in business for myself again some day, but don't think I will ever hit a home run such as I did in my 20s...
I 100% agree with the pros and cons of being sole operator. I quickly erased myself from that position as I wanted paid-free-time, not to be consumed by my job. Plain and simple, it is much better to hire out for the best people to do each needed task that they do best and pay them well for it. My 3 managers all made over $160k/yr... I had an administrative team of 5. And about 20 technical workers. Myself, I enjoyed being an innovator and thinking creatively... I believe it is what I did best for the business... every other task I contracted out to people that did their own work better than any average worker.
If I would have tried to run this shop by myself, I'd be making 100k/yr, but 365 days a year nearly and would have never got any blue chip contracts that raised my yearly sales to well over 8 figures.