I have one. Would I part with it? No. It's a 1 in 9 Superlight. Do I shoot cheap ammo in it....no, just my handloads. Does it do anything my other rifles can't? No. Mild .22-250 loads will do the same thing. Why do I have it, like it and keep it?? Cause I'm a handiholic, that's why. It's a good thing my imagination is limited by advancing age. I don't know where I'd store or have time to shoot all the Handis a fertile mind could create.
The answer to your question lies in
YOUR definition of "NEED". That is a very nebulous term when referring to guns. A "Normal" human would not "Need" 14 Handi Rifles among many others. All I can tell ya, is that here on this forum, our "Needs" might be a tad different from the rest of society.
Having a fair idea of the advanced state of your affliction, I'd say you need it. If you require a prescription, let me know and Doctor Pete will get it for you.
Pete