I only now own one Leupold. I have had issues with some other Leupolds. Mostly tracking and not holding zero. Not a 40X, but a 8X32 Mueller for a target 22LR. No issues at all, and it was a "cheap" scope. For other rifles, Kahles, Zeiss, Sightron, and Burris have severed me well. Of course I can't shoot very well either. I don't hate Leopold's, I have just found that there are many other options that are perhaps better than some of the current offerings.
Don't feel bad. Testify! I have two Mueller 8-32s. One is on a 22. The other is on a 6x45mm. They work just fine. If one were to fail, I'd get another. Both get cranked around, but probably not as aggressively as the LR folks. Mind you, 100 yd is a LR shot for a 22LR.
Ever since I was a kid, I thought that Leupold, Zeiss and others were overpriced. But that's me. It's what you or me, or someone else is happy with, and works for them.