Am I selfish?

Am I selfish for not wanting to Jr. My son? My fiance says he wants a Jr. Because that's his first child/son and if we don't he will never have his Jr. I personally don't know why this is so important to him, I told him he could name our son I'm just opposed to the whole Jr. Thing because I feel like that's technically letting my mother in law name my child 🙄 Justin is a name she chose for him he's not even named after his dad so what is the big deal with this? I want my kids to have their own identity & I feel like their names are a big deal. I don't want him to regret not having his precious little Jr. But then I don't want to regret not being able to name my own child or both come up with one since he's both or ours. We argue so much over this it's gotten to the point where I don't even enjoy it anymore like I'm so tired of it because either way it's a lose lose.