Unless you enjoy comedic action dramatic heartwarming enjoyable adventurous moments, I'd say that watching just one episode is highly recommended (10 out of 10). I'm still watching the best anime I've ever seen, along with episode 897. Although it may seem like a lot of episodes, I assure you that they are worth watching—at least 10–20 or 30. I'd recommend 40 since that is my favourite arc. I adore Luffy and find his idiocy funny. For example, everytime Usopp Nami and Chopper (his crew members) ask him not to go to a dangerous island, he does the exact opposite and heads there, which would explain why the D in his middle name stands for danger.The show features several funny moments.  
Even after finishing the main tale, you can still become engrossed in various side stories with these characters because, in addition to the anime, the series has a tonne of computer games, anime movies, specials, and OVAs.  
There are many unexpected story twists, but they are nevertheless hinted at, sometimes years in advance.  
Later on, Luffy undergoes considerable character growth that lessens his naivety, even though he still has a resemblance to the earlier Luffy.  
There are several moving moments that make you care for the characters, with Brook, Nami, and Robin standing out.  
One Piece's plot arcs are also very diverse, ranging from a food-related one (Whole Cake Island) to arcs involving monarchy (Alabasta and Dressrosa), to arcs including other themes.It excels in so many aspects. Because of the art style, I didn't want to watch it at first, but I eventually warmed up to it and now I adore it. Every character is distinct, which makes their interactions all the more entertaining. The show also excels at world-building, maintains consistency throughout each episode (filler or not, I never feel like an episode was pointless), and has a wide range of sub-themes—especially when considering the Straw Hat crew members' backgrounds and prior adventures. Even if the series is fairly continuous, I haven't even reached the halfway point.

Many people have a propensity to keep their attention fixed on the protagonist's objective, which was expressed at the start of the anime.One of the best anime I've ever watched, there's no wonder it sells the most manga globally; the story is amazing, keeps you interested, and the fighting are too good. You might find some portions drag, but you'll get through it. One Piece is still enigmatic, humorous, touching, dramatic, action-packed, and generally adventurous even after all these years.TO BE CONTINUED.