Why do you think that people are going to build apartment complexes that don’t get rented out? That’s not how things generally work. They develop these things because they are in demand and make money.

It’s highly in demand to have more, cheaper, rentals available in cities, to provide for more people. There will be 5 people moving in for every person moving out because they just really wanted a single family home.

Single family zoning is literally just government authoritarianism. Let markets decide how they want to build housing. If you don’t want to live in an apartment you don’t have to, but you also don’t get to dictate how other people use the land beyond reasonable health and safety restrictions (I.e. limiting pollution and heavy industry). That’s how it should be.