Anyone who has had 2 kids back to back?

Is there more pros than cons?

I'd love to have two children close in age and I would love to get all the baby year done together to then have more time in 3-4 years.

Most people I asked (family members) look at me as if im crazy but I'd rather get through the sleep deprived, nappy changing times at once and then have 2 children growing up together and having a strong friendship.

I myself have two sisters, one is 12 years younger and the other is 19 years younger so my mom has been raising kids 80% of her life....I find that much harder than what I am hoping to do.

What are your thoughts on back to back pregnancies ?