From a public safety standpoint, I just can't justify private ownership of anything too big. Traffic is crazy enough around here without some idiot mounting a recoilless rifle on his truck.
To play devils advocate for a moment.
With your line of thinking, you must be a proponent of assault weapon bans, or an opponent of conceal and carry. The thinking that just because people have these weapons that there will be mass killings in the street, simply because someone was slightly annoyed by another person.
So following your logic that from a public safety standpoint people shouldn't be allowed recoilless rifles. To continue with that line of thinking "assault weapons" should be banned, and conceal and carry should be repealed. For the public safety of course. Why? Because ordinary citizens wouldn't know how to handle such weapons, or have the discipline or knowledge for appropriate use of said weapons.
"Traffic is crazy enough around here without some idiot mounting a recoilless rifle on his truck."
Our local ski resort actually uses one of the old VN era Recoilless Rifles for avalanche control. Kinda neat to watch.