I'm a lot older than most of you lot I reckon, in my 60s. An intrepid solo traveller from a young age, I was fearless then. At 23 way back before internet and sat nav etc. I took myself off the US alone. Went to NY, Washington, New Orleans, Phoenix, LA, SF and Savannah. I wouldn't do it now though, funny isn't it?
It's Europe for me going forward. Shorter flights, GHIC health care, good public transport and so on. (I have annual travel insurance aswell).
One thing I do agree with from a pp. Air bnb is definitely not an option for me, and should be used with caution by those alone. I know most of you are younger and more carefree than I am now, but I would worry about something happening to me and no one around to get a doctor etc. Also the idea of how many bloody keys are out there aswell. I use hotels but I always bring a door wedge just in case.
In my younger days when I was hassled by the local Romeos (great memories, those days long gone now as I'm invisible!), I pretended I was deaf, they moved on quickly after trying to communicate when I repeated "What, what what" forever 😊