My DP has not seen his biological F in over 10 years and actively dislikes him. Both paternal DGPs are dead, and his DM has remarried and changed her surname. He literally has no reason to be attached to his. Additionally, his last name does not sound good with my first name (think Harriet Higgins style weird alliteration). Therefore, I raised the idea yesterday that, upon marriage, I would prefer him to take my surname. He seemed horrified at the idea and suggested that we both take his DSF's surname instead. AIBU to think that, in 2018, it should not be automatically assumed that the man's surname becomes the 'family name'? I wouldn't even have an issue with us both retaining our own surnames, but that would make things complicated when we have children. I don't know whether he feels it would be emasculating or what, but suggesting we both change our names seems ridiculous.