I never really enjoyed shooting .22s. They were just to get triggertime for cheap.
At the age of 11, my little sister took interest in shooting. I saw a LN used 10-22 for 90 bucks, and got it. She spent more time behind my AR, most of the time with the ceiner installed, but not always.
Ammo started going up. My daughter was born, I was married, etc. My disposable income was no longer disposable. I'd shoot centerfire when I could, and my 10-22 stayed in the safe.
I had a good for nothing AMT frame and decided to rebuild it. It had a Kimber gripsafety installed (I have four kimbers), and with the combination of take-off and used parts, I had a complete frame, and the intention of putting it under an AA conversion.
I wound up with a Ciener (couldnt find an AA when I got the fame back). I built it just so I could get cheap triggertime with a 1911. After a short time, it became my favorite pistol. I dont even take it out of the rangebag when I get home. Because of that pistol, I cant go to wal-mart without getting a federal valuepack (unless they're out).
That led to my dedicated upper. I started off with the ciener conversion, with the intention of building my upper around it as money allowed. I ended up using a KKF bbl, M1S flat top 9mm upper, and I came across a stripped lower I forgot about. So I got the odds and ends to complete it, and finished my carbine.
I used to think rimfire was boring, its low cost was the only thing that appealed to me. Now that I have it in platforms I like, its more fun than a bbl of monkeys.
If you wont enjoy a 10-22, go ahead and get the upper. Otherwise it will sit in the safe, unfired, for years at a time, while you complain about the price of ammo. That's what I did anyway...