The last 500 chapters of one piece are completely unreadable. It's all schizophrenic scribbles and plot that's likely being pulled off a bar napkin from 20 years ago. I don't find Luffy's adventures particularly compelling. It's pretty much the cast walking around punching stronger and stronger things with no real moral compass or sense of right and wrong. Why not just read Tsugumomo at this point, at least that slugfest has hot girls