NIMBY types vote. You try telling them that someone can put up a hideous skyscraper between their house and the mountains/ocean/etc... and they'll have you on your ass in the street come November.

Their parents bought that house. They've lived in it all their lives. Now you want to ruin the view and gentrify the neighborhood just because you think single family detached homes have no business being within a mile of the city center? Half of the legislature lives in those neighborhoods! All you are going to do is attract undesirables anyway.