The challenge mostly. Even though I can't remember taking a second shot with my 30/30. I always knew it was available.
I got into the rendezvous and BP shoots for awhile, but now i'm just back into hunting, and an inline is more practical in the rifle seasons here, because of the weather. I also like the lightness of an inline, and with my vision I need a scope. I still refuse to put a scope on a sidelock.
Plus, blowing clouds of smoke is cool!