No, I have never owned or used a proper gaming chair before. I don't know why people love them so much. The price for such a chair is really too high. If you compare it to other ''normal'' chairs - for that price range you can literally get any chair you want. Plus the designs on some of these gaming chairs seem very uncomfortable to me. The lower back area seems weird.
I much prefer my nice, big, comfy office chair. It's nicely pillowed, large armrests, large support for my back and a good cushioned part for when I want to rest my head. All of this for 1/10th of the price of a gaming chair.