In my case, my way of investing is to split them into those two categories you've mentioned. Actually they're connected that is why I use them both as a basis if it is good or bad to invest to a particular coin/token. As of now, I also had chosen to invest on those NFT projects, especially those NFT games that are currently booming like Axie Infinity and Plants vs Undead.

Currently looking for more potential NFT games, you might want to mention some guys, thanks