This is buying into the idea of rugged individualism when it comes to parenting. That all a child needs is their parents and that time away from children is a failure of parents. This couldn't be further from the truth. Many studies show that children raised in a cooperative environment where they are exposed to various people and practices from extended family, professionals, teachers, etc help reinforce social connectedness.

Not to mention parents have more to them to simply being parents. Their own desires, wants, and needs. Balancing these with being parents leads to the more fulfillment.

This feels like a strawman. I didn’t say that “all a child needs is their parents”. I am saying however, that parents in most cases will provide higher quality care and more attention to their child than what a daycare can provide. Have you tried watching 3 kids simultaneously? It’s just not possible even in the controlled environment of a daycare room. Kids that are raised by parents aren’t in a bubble - they’re still going out and meeting with other families and kids and doing things. The notion that children raised by parents are not exposed is itself a common myth used to diminish the value of parents.