I don't know, I think that when they are babies and you need to feed them every two hours, barely getting sleep, that must be really hard. And that is you are lucky and they are healthy. I think the two first years are really tough for any parent. And the first months specially on the mother, who is still recovering from birth while not getting many sleep.

Once they start sleeping the whole night, it gets better, but until then, I think it is really hard.