Nah, everybody used to think slavery was OK. Yet it wasn't. Plenty of people know they shouldn't smoke. Yet they do. Evolution is 'red in tooth and claw'.
Let me re-formulate my explanation of why daycare is bad:
(1) Small children need love and attention; they also need adult help available; they need to feel secure.
(2) Love, attention and help aren't raw undifferentiated qualities. The quality depends on the source. A familiar source which knows the child is required.
(3) The anxiety induced by an early childhood separation from such sources is potentially traumatic and long-term.
Therefore, young children shouldn't be separated from their mothers and/or close relatives.
Let me re-formulate my explanation of why daycare is bad:
(1) Small children need love and attention; they also need adult help available; they need to feel secure. (2) Love, attention and help aren't raw undifferentiated qualities. The quality depends on the source. A familiar source which knows the child is required. (3) The anxiety induced by an early childhood separation from such sources is potentially traumatic and long-term.
Therefore, young children shouldn't be separated from their mothers and/or close relatives.