Should I Stay Or Should I Go Now?

I'm having issues with my boyfried/baby's father (20 years). A few days ago we got on the subject of marriage and he gets to telling me that he doesn't see the point in us getting married (the whole ceremony thing, inviting family of which he has minimal, etc. etc.) because he already sees us as married (we had our 7 year anniversary in Feb. of this year.) The biggest point he made was that he was scared us actually getting married would change things. He doesn't really say how, he just clearly, thuroughly stated over and over "Everything would just be different, I don't know how to explain it but everything would just change."

I have an issue with this. I made the point to him that even tho we're damn near married as it is, the ceremony, even if it's not huge, a ring, not a big one just one that I can say he got me and to legitimitely call him my husband and not just say 'it's like we're married already' are the things that are going to distuinguish us from other couples who are baby momma/baby daddy, boyfriend girlfriend trying to raise a family, split home upbringings. The only way he understood this was when I put it in terms that apply to him personally. When him and I were younger and we broke up we still acted like a couple just without the bf/gf "label". The label is the only thing that distinguished us.. but messing around to gf/bf isn't as deal making a step as gf/bf to legit marriage. 

My thing is, I see the demise of our relationship and he doesn't. He doesn't seem to think that our differences on anything are enough to keep our relationship from coasting by. But at the point I'm at, I feel like I need to make a decision and quick for my benefit and what benefits me as even better for my daughter. The 2 decisions I have in my head are stay and wait and see if he comes around or leave and that way any and everything will be in my control. I can rely on me to do what I know needs to be done, like it or not.

Each has it's pros and cons but im not sure which weighs out which because factors of each have greater weight to them than others; For me, my daughter needing her father outweighs my want (starting to feel like a need) to have my own place (I moved in with him and his mother right after I had eva so him and eva could be together).