@altijdgoede I don't know when or how it started to  change  girls last name after marriage; but it's just not our culture. Every culture that I know of changes girls' last name to guys' last name. 

And also to answer your question no I wouldn't not change my last name to girl's last name and also I wouldn't care if my partner didn't change her last name after getting married. Hell i wouldn't even care if she wanted kids to have her last name.