What’s so horrible about poor doors?

Extell Development’s plan to have a separate entrance for “affordable housing” tenants at 40 Riverside Drive — separate from the renters paying market rate — has beenuniversally condemned.

Mayor de Blasio and his comrades consider the poor door “a form of government-sanctioned racism and classism” and “segregationist.”

But the folks who pay extra to fly first class disagree, and so do the ones who pay big bucks for courtside seats at Knicks games and field-level boxes atYankee Stadium.

We are all created equal, but we don’t have to be treated that way if we can pay for better service, more legroom, better food.

The poor door is a good idea if it prevents simmering resentment from boiling up between the haves (the lottery winners who have an “affordable” apartment) and the have-nots (the poor schmucks paying market rate.)

I can imagine two tenants in the common elevator. “How do you like that ‘affordable’ apartment I’m subsidizing?” says one. “It’s great. How do you like paying four times the rent I’m paying?” says the other.

Maybe it’s best to keep them apart.