For me it is several things. First I love my souped up traditional rifles. I like to shoot them for groups to see what works and what doesn't.
I also like to make my own bullets. I can spend hours on end making the perfect bullets. I turn on the oldies radio and forget about everything. I cast a LOT of different bullets and it helps to recharge me.
Lastly I use muzzleloaders to hunt with.
I was bitten by the muzzleloader bug when I was a young kid. I have a ton to centerfire rifles but have never killed a real big buck with a CF.
For me the big attraction is to have a hobbie that I can just forget about everything else. I can let it consume me and let the worlds troubles go by.
Shooting black powder guns is more than a sport it is a part of who I am. Ron