Wouldn't it be nice to have space, (and money and indulgent wife) to own more than one m'bike.
Space wise I'm maxed out at 12 bikes and not all of those are easy to get to. And yes, I do consider myself as fortunate.
Regrets, I have a lot, but I can sit in my garage of an evening with a scotch and a pipe on the go and look around and figure that the 17 yr old me would reckon I'd done pretty good.