Hey Collette, I, for one, am not offended at all by your curiousity question.
My general answer is:
"As many as they want."
For me, the shooting sport is lots of fun. I enjoy experiencing different ones. I have 3 now ... that is if the shockwave shipping is approved. I have a very small caliber pistol (.380 acp) for truck. It is not uncommon to see timber rattleanakes on the back road to my house in the deep woods. If my truck breaks down at night, I would not even consider walking a couple miles home without it. I keep this .357 in bedroom for home protection. The shockwave, because it is light and easy to manuever, will be my snake-gun for just outside around the house ... will keep it loaded with small varmit pellet shells.
Hope that answered your question.