Grandparents/other family might not want to take care of your kids every day while you're at work, which is understandable.
Yes but see, it's more and more common for people of our generation to live far away from their parents or any family.
Maybe, like waiting too late to have kids, that's something we as a society should rethink.
When our little boy was 20 months old, we moved 2 hours' drive north to be in the same town as my wife's parents. This is probably the single smartest thing we have done in our marriage.