"There are lots of ways to skin a cat," as people used to say. I built a very simple
2-rail layout in my available space (about 20x40 feet) using the largest radius I could, which is about 108" with easements (overkill?).
Ten years ago, I had the same space crammed with tracks and equipment, but it was not as satisfying as the present arrangement in which my Rio Grande L-105 and A-B-B-A F-3 units sweep gracefully around the very large curves. This certainly isn't what most people would do with a large room, but after years and years of messing around with model trains I finally have something I really like! Maybe it's because I'm 68 and simplicity is more and more appealing!
I settled on O-scale 2 rail modeling about 40 years ago after working with HO and S and I've never regretted the decision, although I certainly can understand the appeal of the amazing models now available for the 3-rail market.
We're all in the same hobby, basically, and it's fun to see all the different ways in which
people have interpreted the hobby: No need for invidious comparisons.