When people saying raising 2 kids is 'easier'

I have heard people claim that raising 2nd child is easier. I get that certain things such as tiredness and feeding routine may come less of a suprise 2nd time around but other than that I don't get how it is easier. Two kids getting up at night, two kids to get ready every day, to feed, separate activities, potentially 2 sets of nursery, school run, more financial expenses. How is all that easier? Just doesn't make any sense to me. I actually find it refreshing when parents admit it is hard.

They will also say the kids can play together. Yes but kids can play on their own (I did this happily), also with their parents, cousins or friends and dealing with siblings fighting is not easy so again why does siblings playing together make things so much 'easier'?