If you live in an apartment, your housing costs can be much lower, and you don't have to mow the lawn, fix the roof, replace the water heater, bring the garbage out to the curb, etc. But you DO have to put up with the noise of your neighbour's new sub-woofer, people who jam up the garbage chute, limited visitor parking, and you DO end up riding the elevator with neighbours who seem unable to keep their germs to themselves.
There are costs and benefits to any sort of close partnering. We used to live in economic single-family detached or semi-detached houses, and now we all live in an economic apartment building. This is simply one of the costs of globalization. That doesn't make it insurmountable or unrecoverable, but it does make it something we now realize we need to plan around. There IS no fiscal firewall anymore, so it becomes everybody's job to remove potential fire hazards.