Whether you'd enjoy any given world depends entirely on how you live in it. Game of Thrones is pretty shitty to it's peasants, but, though not without it's own risk and issues, if you're a noble you have a pretty cushy life.
Overall, One Piece's world is the best, or atleast the one you're most likely to live happily in. Whether you're strong or weak, citizen or pirate, the characters of OP are typically enjoy their lives. Tragedies always come with a nice comic gag or two however awful. And when things are going well, everyone is joyful like there's a free happy pill clinic in town. It feels creepy and almost psychotic how blissful OP's world is, like that game We Happy Few.
The best part is though that people recover from pretty much anything. Town gets destroyed? No probs, we get that shit back up in a day. Won't even have to worry about an economic collapse or anything. What about when there are major societal changes? Well, generally speaking, entire cities are monoliths that all feel the same way about a ruler, so you don't have to worry about any internal societal conflicts, by and large.
Did you get the shit beaten out of you? Broken bones, internal bleeding? No worries, your heart is your only truly vulnerable organ. So just put on some bandaids and you'll fully recover from pretty much anything in a few hours. Days at most. What if you suffer permanent injury, like having a limb cut off? Well, that's inconvenient, but the pain lasts a few days at best and you generally don't actually experience any loss in capability as odd as it might seem! Okay, but what about death? Well, that's a possibility even with the nigh immortality you carry, but you can even radically diminish that possibility by having a distinct personality and name! And also if you're born in the era of the Straw Hats, you're life expectancy is all but assured, since deaths mostly just tend to happen in the past.
There are some frustrations though. Despite women dressing provocatively everywhere, no one seems to be actually interested in sexual relations or even romance. The World Government is laughably, cartoonishly inefficient (though that one is true to our world too). And any attempts to understand the world are fruitless, so if you're curious about things like "Why do we all speak the same language everywhere on the planet" or "why can we ignite things on fire or grow multiple heads through will alone?" or "Why do we have cultural artifacts of cultures that don't seem to actually exist in this world?" or "why does reality destabilize into a shrodinger dimension where things 'happened' yet 'did not happen' at the same time when a 'gag' occurs", you'll go a little crazy.