I wouldn't say I'm not interested in an early retirement as much as I'm not interested in the traditional concept of retirement. The sooner I can get to a point where I can do my work on my time in what place I see fit, the better. I'd love to take my kids and spend summers in Europe and work remotely. Hopefully I can make something like that happen in the next 10 years. My wife has already begun mentally preparing herself for the day that happens because she's much more of a homebody and sitting around my house on days off is about as much fun as watching a baseball game next to Stephen Nelson. Misery.
Running your own business isn't for everyone. As Kurt very accurately puts, it just means you get to pick which 80 hours per week you work. There are lots of people that just aren't wired to shoulder the type of stress 24/7 that being in charge of some things requires. There are lots of people that are happier knowing they have a structured position that is safe, and allows them to save for a retirement that they look forward to. They do better in routines and don't like to step outside of that comfort zone. Then there is every shade of person (figuratively and literally) that occupy very part of the middle between those two sides.
I realized in my mid 20's that I'm wired the way that I am. I'm not in possession of any marketable skills (unless being an asshole is a marketable skill), I don't particularly enjoy physically working hard, and I don't like being told what to do. So I only had so many paths to take lol. When I did sales/marketing for the print shop back then, there were people that literally worked 730-4, M-F running a letter inserter. A ****ing machine that inserts statements and other stuff into envelopes at about 8k pieces per hour. It's loud, it's dull, it doesn't pay particularly well, and it's the same clackity clack noise for 8 hours per day 5 days per week 50 weeks per year. Some of those people worked that machine, or ones similar, for 40+ years until retirement. To me, that sounded like Dante's 9th circle of Hell. But you know what, there is absolutely nothing wrong with that job and that life. Come in, do your job, go home and do whatever you want without any work related stress. Rinse and repeat for 40 years. Put away some money and not spend frivolously and boom, you retire on time with enough money to do what you want. Shit, they'll probably live to 100 since they avoided working themselves to the bone and being stressed out for most of their lives. I 100% understand how some people are on that path, but it's not for me. I'm a firm believer that every person has their own path, and I defend everyone's right to that path and their own happiness so long as it doesn't prevent someone else from having theirs. What's "right" in stuff like this is very much a subjective thing.