I've practiced shooting a few times as an adult. I suck. I tell myself I'll practice on more regular basis, but then of course I don't.
In sixth grade there were some girls who played marbles, but my mother wouldn't let me play for keeps, so I missed that chance to learn the sport and bond with the kids.
I needed bonding -- that was the 9th school I had attended -- I needed bonding something fierce. But Momma didn't get that.
Oh sheesh ... TMI? lol ... I hope your marble playing stories are more fun than mine.