I have three kids.
first one no daycare.
second no daycare..
third one one was about 16 months and went full time while the mrs went back to school.
believe me we had the same feelings as you hence doing what it took to have one parent (mom) at home for the first two.
but.
the experience was absolutely 100% positive for our third child. She became extremely well socialized, independent and self sufficient.
Its a tough step no no doubt but it can be very good.