I use them on all of my hunting rifles plus my two muzzle loaders.
I started using them about 15 years ago, and haven't looked back. I love their speed and positive sight picture. Also, if you shoot with both eyes open, you can make an accurate shot at reasonable hunting ranges with a fogged or even totally blocked objective lens. Most of my hunt camp has switched to them in that period.
If you tend to shoot regularly at long range, I'd imagine that a scope would be the better choice though. I killed one deer at a little over 200 yds with one, but the remainder of my shots have been at 100 yds or less (actually most are under 50 yds).