It doesn't really matter what scale you are in. A model railroad can only be as long and wide as the space it is built in. You cram more trains or scenery into a given space in a small scale than you can in a larger scale. The choice of scale or gauge is up to individual preferences and their modeling goals.
I have a 3-rail layout at home and I am a member of club that has a HO, G and O 3-rail gauge layouts. I operate trains on all three gauges. All are reliable and are fun for different reasons. Enjoy whichever scale and gauge you choose. NH Joe