Who believes you can’t have enough diapers for a baby? Who believes you can have too many? ?

I have grown up around younger kids my entire life, I have a brother 9 years younger than me, and all of my cousins are younger than me on both sides of my family. When I was growing up I was 9 before I ever got a brother, then my aunt S had 9 kids all together on my dads side which we all lived near each other within walking distance. My moms side had 3 kids who also 12 years younger 14 years younger and 19 years younger than me.. they also lived within walking distance.... our town consists of less than 400 people. However my husband only had 1 brother and no other kids around on either side his mom and dad were both only child. He has never really seen a baby “grow up” ..... Also I took ECE for learning about children during high school and college for 8 years. 

I am aware babies go through a ton of diapers between birth to 3 years of age. Between diapers and pull ups I have 2 newborn boxes, 1 size1 and 2 size 2... 5 boxes total with 90 in each box. However my husband said I am going way over board.. I say I am preparing because it cost to raise a baby. He gets mad every time I buy anything for the baby. He says everybody is supposed to provide it for us at the baby shower.. would you side with him or myself?