First, taxes paid isn't wasted money. It's (theoretically) going to those who need it. Tax havens, along with other tax avoidance schemes, are pretty popular with the rich, which means governments are on the lookout for them. It's not as easy as you think. For example, if you're American, leaving for a year doesn't do a whole lot.

Second, countries are locked down now but even after this pandemic is over, your limit is 90 days. If you're from a Schengen EU country you can get a residence in Monaco and just spend your time traveling. But again, I've heard that if you've ever paid taxes in France, for example, it might not be possible.

There are cruise ships that exist for this purpose. Spending a year surrounded by those kinds of people would seem like a special sort of hell, to me, personally.

If you can live abroad, generally, that's a great experience. Leaving family and friends can be a big cost for some people but if you can do it, it's recommended.

Traveling is like meeting someone, living there for a couple months is like dating them, and longer is like moving in with them: you get to know them intimately, all of their idiosyncrasies and it influences you in ways you can't avoid. You end up being a different person, usually for the better.

Like with everything, it's different per person. I always say: don't do anything just for money if you can help it -- and you usually can.