How do you afford it?!

How do you afford to be a stay at home mom?! Or how do you even afford daycare?! My husband and I own our home and the mortgage is only like $850/ mo and the only debt we have is 2.5 years left on our car payment... We make the same income and I feel like it would be impossible to quit or pay for decent daycare and I'm seriously considering putting a hold on ttc. HELP! How do you do it?! Ps he is 30 and I'm 27...