What? It is opposite. Having kids make you lonely especially when they are little. It is super isolating even if you are not the primary care provider.
I think with caregiving of any type, there can be a split between loneliness and isolation. When I was the the caregiver for my mom when she was sick, I had no time to feel lonely, but after a few months the isolation of the situation really began to play tricks on my mind. It felt like my entire world shrank to just that house, everyone I ever knew became text bubbles on a phone, and the rest of my life that had happened up to that point felt like a dream that may or may not have actually happened.