Personally, I don't see very much wrong in hiring a nanny or house help so long as the situation requires it. Am talking about situations where both parents are mostly absent, working regular 9 - 5 jobs.
A nanny can be very helpful in the said situation above. Not just for taking care of the children, but also running the house operations in the absence of the parents. But in some situations, this decision might turn out bad at the long run.
I like to keep in mind that employing nannies can be of some disadvantage to the parents. A parent needs to be involved in the daily lives of their kids. Therefore, putting a nanny in place of them will mean that both parents would have little or no personal relationship with their kids. How then do they know exactly what their children are going through in certain situations? Parents should always make out time for their kids no matter their working conditions. The best time to make memories are when they are young. And remember, good memories are not just made during holidays or vacations, they can be made during daily living in the house too. If a parent constantly misses that, with time, children grow up and begin to take on their own responsibilities. When do you now make up for the lost times?
Hence, having a nanny can help a great deal, but parents shouldn't completely rely on nannies for taking care of the kids. They should try as much as possible to make out time and spend with their kids in order to make good memories and have a steady relationship between them.