I don't understand first question honestly. How could infant not be allowed that, I am confused.

To all honesty the only true unconditional love is for ones children. Everything else has element of condition. I love my husband deeply yet if he did not love me back I wouldn't stick around or if he did something very horrid I'd eventually moved on. There is nothing my child can do ( even if I was disappointed with her or mad) for me to stop loving her.