Bf wants a jr but i dont?

My boyfriend is really adamant about our son being named after him mainly because every man on both sides of his family has a jr so its a huge tradition. I personally dont like jrs and never have but i offered to switch his middle and lasts name so he's still named after him but he said he wants a jr really badly. I feel a little bad cause he'd be the only one without one but im so against it plus our relationship has been rocky throughout the pregnancy so I'm considering the possibility that it could not work between us. My bf said we could call our son by his middle name so i wouldnt be calling them the same thing but i dont get the point of naming him jr if we wont even call him his real name. Should i just give in or stand my ground?