From what I here 10/22's are great. I saw several people using a the AR15-22 at Steel Challenge this past summer. I don't really see the need to have both, but then again I don't see why I would have 8 shotguns like my brother has.
I have a Weatherby .22. I am happy with that. If my wife would get into shooting with me, I would look at getting a 10/22 for her.
There are 8 pieces in the safe that are .22 and one is an AR. One is a 10/22.
Well, I forgot the grand daughters Cricket so make that 9 pieces. Why not have several if you wish.
We do keep enough ammo to run them all.
Call it a hobby/sport/activity....no matter. It is how you justify the expense and that is all it is. Going to the range is safe enough if you observe the 4 rules and go to a "Good" range. The same with hunting etc. We have always been involved in racing for many years and it is far more risky then shooting IMHO. A lot more expensive as well. Pick your poison and enjoy.