If this argument was in favor of cars, for me it would be the same: Where am I supposed to park? You expect me to pay $400 a month just to park a car at home

If this argument was in favor of cars, for me it would be the same: Where am I supposed to park? You expect me to pay $400 a month just to park a car at home and another $400 to park it at the office? Cars are fun, but not very practical. It all depends on the environment you are in, which is not a static unchangeable monolith. You have choices. Maybe living somewhere where biking is practical would involve making choices that go against your priorities, but those are your priorities.