Why do people hate zoners so much?

First of all, excuse me, I'm relying on the translator for my post, so it may have errors.

I picked up SF6 as my first fighting game in February and have been hooked ever since. I spend my time looking at character guides and tips, as well as practicing commands a lot, and so on. I started with Ryu for ease, but I hate mirror fights, so I stopped using him and went looking for less-used characters. I really liked Guile and started practicing him. It was too hard for me to get his SA1 and SA3 skills right. I don't know when I'll learn to use them in combos, and I realize that the character is by far the hardest to use in the game.

Hence my question: Why do people hate zoners so much? The difficulty they bring in their execution and gameplay should be more valued. My respect to the Guile masters, because with Ryu I reached iron, so they're pairing me with iron with Guile, and they're destroying me.