That might negatively affect my property value, but the alternative is affecting my own liberty. And, of course, the odds of the latter happening are fairly minimal. What is much more likely to happen with a less restrictive zoning code is that someone will actually get around to bringing a grocery store into the area.
Current zoning laws forbid warehouses from being in residential areas. It was purely done to prevent unsightly factory buildings from being around people's houses. You are also responsible for keeping sidewalks in good repair on your property. Is that giving up liberty too? :)
I know what you are saying, and I think it's a great/fun discussion. I think you either believe that someone has the right to do whatever they want with their property, or you believe that your property is part of the greater public sphere and you have some responsibility to that public sphere by owning property.