It's not about the size of the screen alone, but also how much the screen fills your field of vision that affects the experience. With these multiplex theaters, they are just boxes with a slanted floor and a screen on one end of them. This is not a theater. There's a difference. Anyone who has attended both classic theaters and current multiplex theaters can see and experience the difference.
There are very few good seating locations in modern theaters. In contrast, at home, with proper planning, the main seating area is always in a "good spot". It doesn't take a lot of money to create a very enjoyable home theater experience. But it DOES require that people think a little bit and not follow the crowd. No matter what my budget was at the time, I was able to create an enjoyable AV home theater that was more effective than if I spent 10x as much.
Of all my friends, family, and acquaintances, none of them have good setups, and they all spent way too much for sound systems are that way out of proportion. But that's what sells, so that's what they buy.
It's nice to hear that you have good experiences and that places like that exist.
View attachment 844088 Obviously your experience is not shared by everyone. If the rest of us had experiences like yours, we would feel differently about going to the theater.