I mean PvP is a little minigame in WoW, so why not? If you want balanced PvP you should not be playing WoW, there's literally a dozen other games that are far more competitive.
And that's coming from someone with thousands of arena games played that's hit 2k on every class other than DK at some point or another. Arenas are very fun, hanging out with two friends on Discord and coming up with strats and things is enjoyable. But if you're looking for something really competitive WoW is not for you. It's why when I wanna take something seriously I play CSGO or DotA. If I wanna have fun with a couple friends I do arenas.