Come on man, you are taking things out of context. I am trying to avoid the "just buy a glock" or "just buy a 1911" advice and give them things to think about. If you read my shotgun post, I mention that 20 gauge guns are available for people that are recoil sensitive. I also state that buck shot is a great self defense choice but regardless of weapon, you have to be concerned with over penetration and that you are responsible for your projectiles. For the birdshot case, I specifically mention apartments or other places where shooting a bad guy is risky. I know birdshot isn't the best, but I challenge you to take a full load of birdshot to the chest at 12 to 20 feet. Let me know how bad birdshot is then.
I'm trying to do more than just give the standard reply I hear at the gunshop. How many times have you seen a potential first time buyer walk into a shop with no idea what to get and some jerk just slaps a glock or mosberg 500 in their hand and say "here, you need this".