I'm not big on the whole daycare thing. When we had our first child my wife quit her job to stay at home, and while we've had to make sacrifices because of losing her pay, I wouldn't have it any other way.
And what if your wife, like you, wanted to keep her career yet insisted that one parent stayed at home with the kids? Would you have been willing to be the one at home?
Many children in my daughter's class have 2 working parents. These kids have no idea of right/wrong, manners, or any of the other things thate parents used to teach their children.
No doubt you choose the examples to suit your case. There are plenty of very well adjusted children with both parents working. In many cases it is the children with no working parents who are the biggest problems.
As far as educationally and socially my daughter is actually slightly ahead of her classmates, all of whom are older than her(this is her teacher's opinion, not just mine).
I attribute it all to having a wonderful loving mother who was able to stay at home with them.
My daughter is now 25. When she was young she spent a lot of time in daycare, with friend's families etc. She is probably one of the brightest, most responsible and socially adept people I have ever known.