I would have married someone else!!!!! LOL
I started in 2 rail O scale and moved into 3 rail O scale. Luckily I kept all my 2 rail stuff. If I were starting over I would just stay with 2 rail.
Also, when we (my wife and I) bought our house I started to put up a 2 rail layout in the basement. My wife kept buggin' me about where our son would play when his friends came over. So, I took the layout down, finished the basement, and waited for him to get old enough to move out and leave the basement to me. Again, If I were starting over I would have kept the layout up and sent my son to his friends' houses to play. Now, my wife has the basement for herself and no room for trains.
Rick