I consider you a pest, and I frankly don't care. You're disrupting the natural order of things by making an easy target for the hawks, they get complacent over time and then sparrow population explodes if everyone did it your way. If you don't want sparrows being clever in the evolutionary war going on outside your window, you should get or make a birdhouse to stick out there. They decided you are a good spot to hide for other reasons and they don't have a concept of your alleged indifference, or your revenge or disdain or whatever you claim to feel. They'll keep coming back because they're fucking stupid birds, your plan won't work and I think that's hilarious.