Genuinely surprised by the vehemence on this thread. I think a lot of defensiveness from people lashing out at OP.
I changed my name the first time I married, and remember an older, wiser woman questioning me about why. I was quite surprised. Must admit that with hindsight, I can admit I thought taking on Mrs Hisname sounded more grownup and "proper".
When I divorced him I anguished for a couple of years about surnames. Didn't want "his" (we had no children and it really was "his"), didn't want to go back to my maiden name (and if you've not thought through the connotations of that descriptor, do it) as it was my dad's and no longer "mine".
So I took my middle name as my surname.
EG: from Jane Elizabeth Hisname to just Ms Jane Elizabeth.
When I married again, I stayed as Ms Elizabeth, and we double barrelled DC despite it being long/weird/posh/common/unwieldy/half a girl's name/whatever. It was the only thing that seemed fair, and I wouldn't have been marrying a man who disagreed. If DC marries a double barrel down the line, they can figure it out for themselves. No big deal.
Which is brilliant, because when I divorced this time I didn't need to fuck around with worrying about my name again. I guess I've spent longer than most people thinking about names, ownership and patriarchal "norms". My name seems very unusual to most people, because it's MINE.