Not too personal a question. The only thing I don't disclose online is current location at any given moment. I am always happy to share once I've left a country, and that is only because I had a crazy abusive ex who made me wary.

I don't know how many countries, really. My mother's work (humanitarian doctor) has meant we moved almost every year when I was a kid. We got to see the most fascinating places and meet the most wonderful people. We did often revisit countries, but different parts of those countries each time.
We never thought to keep track at the time, it was just normal life and didn't seem noteworthy, and now nobody in my family can remember all the places we've been ha ha.
Due to the nature of her work, we never saw the tourist-y side of the things, but more the tiny nooks and crannies of the world, so I have really special memories.

As an adult, I've resided (sometimes only briefly for work) in 7 countries- moving on average every 2 years. I have not moved since my accident in 2017 as I needed to have multiple surgeries and had to stay in place to do so.
Love my current home and am happy to stay longer, but always dreaming of the next adventure. Hopefully I have a few more of those ahead.

My mother and siblings are just as nomadic. The world is so fascinating that we're addicted to exploring it!
The main takeaway from me is that the world is a much safer place than we imagine. Even as a single, young female, I have found that I feel relatively safe just dropping into a new place. My friends always think it is insanely dangerous but, I have been so fortunate that I've never had trouble.
There is a young German man who hopped on his motorbike and has ridden halfway across the world with his cat. I forget his name presently, but I admire that wanderlust. He has the privilege of not needing to seek employment and can just explore, and his bike gives him access to some really cool remote areas, so his adventures are on another level. I'd love for him to write a book of his adventures!
And, as ever, this has turned into a novella!