Yes. You need help (like most of us do).

However, there is no help / counselling / therapy available for this addiction. I believe this is quite common but resistance is futile!

As you stated, there is such a choice from fun and quirky airguns up to serious pieces of kit and sometimes temptation does make us make impulse buys.
However, its a great hobby. We can buy and sell our collections as time goes on to improve what we have or just if we fancy a change. Tuning and improving is another great aspect of our world.
Getting our kids involved is also a nice part of it too.

Storage can be a problem but remember that thinning out family members is always an option to provide extra space that shouldn't be overlooked.

Especially when (not naming names), she says "you do NOT need another airgun"!!