Is it a good idea to have a shared bank account with your boyfriend for groceries/laundry/rent if you’re arguing over who is going to go shopping this week?
It is my experience that sharing a bank account amplifies financial disagreements between partners, so you two would need to sort out your money issues first.
Figure it out together. Come to terms over how you’ll handle your finances as a couple. Write it all down in as much detail as possible. There can be no uncertainty when it comes to shared expenses, and no matter what you decide, you should still retain your own personal bank accounts.
A joint account isn’t a solution. It’s just an instrument. Open communication about money is the only thing that’s ever gonna solve those problems.