We are expecting a little boy at the beginning of December. I have pretty much given in and accepted that he will have my partner's last name, but I do feel sad about it, in particular that it'll be only me without the name. (We are not married. We probably will get married at some point but even so I wouldn't change names as I publish under my name and it's important professionally.) We were both open to using both names in some way but they just sound ghastly together (both monosyllabic and to be honest my last name is quite ugly anyway!). DP's last name is objectively more attractive and also has the advantage that it appears to be British (my nationality) even though he is actually French (his nationality), so in a way represents both sides. It also has a strong family history for DP (his father and g'father are quite well known) and is significant to him as a result in a way that isn't really true for me.
But I still feel sad about it! Has anyone else been in a similar boat? Did you give your name as a middle name (seems a bit token but perhaps worth doing)? Or come up with some other solution?