A mediocre shows since it's bgginnings, full of conveniences, a bland main character which only personality trait is "Oh yes, i can do it" for more than 20 years and still being tedious, and all the characters that aren't Brock and Team Rocket have no charisma at all. A show that showed a little bit of potential in Hoenn and Johto trying to change the formula, but after that every time they try to do it, it returns to the same cycle over and over again. And the fact of being a commercial for something is not an excuse to be so bad, there are better shows out there that are also in the same category as "Buy toys and games of this creatures" that are miles far better than this. The onlt thing that i can actually say is actually good, is the soundtrack.
You can enter the world of Pokémon by other means, the games, the Cellphone game, the cards, the comics/mangas, etc., But the anime is one of the lowest products of the Pokémon franchise. If it was your childhood, good for you, but don't let nostalgia to blind you, this is and has always been, a bad show.