I shot my first ML at about age 8 or 10. It was an old Ultra-Hi .45 "Kentucky" rifle. It was a ton of fun but it never was a go-to gun as it wasn't very accurate nor reliable. Side note on that gun: The trigger was over 9lbs...
About 10 years ago, I put the centerfire rifles back in the gun case and they have not came out since. A lot of my friends look at me kinda funny when I pull out the smokepole during rifle season.
For me, they're so much more fun than centerfires ever were. I love the added challenge-especially with a sidelock as I can't shoot open sights all that well.