Welcome aboard, from a long-time shooter and TFL member ... who only got into BP in the last couple of years.
"Addiction" about describes it. While I have Walkers, Dragoons, and a New Army, my weakness seems to be Ruger Old Armies. I've been shooting Ruger SAs long before I discovered black powder, and when the the BP Bug bit and I fondled my first ROA, I was smitten. My fourth should be delivered later this week.
Long guns, too. Bought a muzzleloader barrel for my T/C Encore, then a couple of Lyman flintlocks. No, I don't think it ever stops ...
Cogito, ergo armatus sum.