I own Colt and S&W. My Colts are fired now and again and not used for real world purposes. The Colts are part of my collection so I don't concern myself with the logistics of parts and repairs. The same goes for my older S&W revolvers. I colllect them. They're treated very gently.
My "real-world" handguns are a couple Glocks and a S&W Model 49 Bodyguard. Still plenty of parts for those models since they're still in production. Those I take care of, but I use them. It's just easier that way.
Those who beat their swords into plowshares usually end up plowing for those who didn't. Ben Franklin