Disagree on names

I’m not sure which group to post this in but my SO wants to name our son after him so he will be a Jr.. and I honestly don’t even want him to be a Jr.. just because I feel like they should have their own personal name.. he gets so mad when I say I’m not naming him after him or he just ignores me about it.. I don’t want to be in disagreement about it but I want him to see where I’m coming from. I just never did like the idea of naming my child exactly after the father in my own opinion. I know we will fight about this and I’m completely annoyed already.. what should I do?