First off welcome. Here are a few of mine.

Pros: Extends hunting season
Provides hours of testing bullets, loads, etc (fun times)
Fair game, you shoot and miss oh well that buck goes on
Smoke and fire
Forces you to respect the game and your gun knowing that a muzzy cannot outshoot a centerfire

Cons: Extends hunting season (usually so dang gum tired the end of the year)
Provides hours of testing bullets, loads, etc (fun times)
(expensive if you like to shoot a lot and just need that better bullet)
Fair game, you shoot and miss oh well that buck goes on
(usually that buck of a lifetime, I missed a 16 pointer one year as I had the shakes so bad and shot and missed, he went off for another day)
Smoke and fire (rotten egg smell of real blackpowder and Pyrodex)
Forces you to respect the game and your gun knowing that a muzzy cannot outshoot a centerfire (knowing that the trophy buck is out at the 250 yard mark and you cannot do anything about it)

If you are in doubt try it. I did and had no help until I found this site a while back. Buy an entry type gun and get some supplies and shoot it. If you cannot do that find a buddy who shoots a muzzy and have him take you shooting. I have been shooting and do not own any more centerfires. It is very addictive and a lot more fun for sure especially when you connect with that first deer.