Yes a grandparent is not so stressed usually because he raised children and he understands it's not so dangerous, a good way for a child to have more freedom. Yes nursery and day care are horrible for child development. http://www.familyfacts.org/briefs/43/the-effects-of-day-care-on-the-social-emotional-development-of-children

When the child is young he wants to stay with his mother, father, grandparents, not strangers. At this stage he needs more adults around that can teach him, not other children his age.