AITA for thinking my husband and I should have joint bank accounts?r

I am upset because my husband doesn’t want to share a bank account with me…do I have a right to be? I pay half the bills and then the other half is for groceries while he just builds a huge savings…I am constantly the one making sacrficies…I dont even buy things that I want…just things that are needed for the kids and for the house…he refuses to combine our money and I am starting to think it is for selfish reasons…I just want to be able to get gas when I need it…