I'm counting down to my 9th move since I turned 18, 5 of which were international moves. I feel you on this.

For most people, like my family still for some reason, moving constantly is either incredibly abstract as an idea, or a terribly traumatizing event. My dad moved a ton when he was a kid, and blames that for anything and everything. Meanwhile, I get sick of living somewhere too long.

Anyway, you do you. If you feel like you have things under control and enjoy what you're doing, then living minimally is also another advantage for you.

Post to /r/mechanicadvice as well. They're at least give you a sense of if there's anything fishy going on.

There's a lot of "it depends" here. Are your jobs paying for the moves? Are you accumulating tons of stuff and then selling it every couple years? Does your job pay for your housing at all? I don't think I've lived in the same city for more than 3-4 years at a time my entire adult life, and I like to think I'm doing pretty OK.

A lot of people will tell you that you should buy a house or something, but if you're already investing, then you're already ahead of 95% of the population. Just manage your expenses of things you can't move with you and have to sell off inexpensively. If there's also international tax implications, keep ahead of that, too.