First of all it is not possible to visit or explore 8 countries with only one bitcoin which has current value of $7500.
Whew, you only wrote that post a few days ago and look at the price...it jumped over $2000. That's amazing in and of itself, but can you imagine if you had to use that 1 bitcoin to live on? If it didn't increase in value but dropped instead you'd be screwed.
I'm not going to submit 4 countries here because I have no idea which ones are the friendliest as far as bitcoin goes, but I think Germany would have to be one of them (at least from what I've heard). The U.S. might be another, but I already live there (lol).
Japan for sure ye, they were the first country to fully legalize BTC and im told its quite easy to live off it there
Eh, bitcoin is and always was legal unless made otherwise by a country. Bitcoin has been legal in the U.S. since it was created, so I don't know what you're getting at.