Successful women tend to keep their surname after marriage. I did. Some consider me mildly successful I guess? It is also because I didn't want to lose my identity I had for 30 years, and I am not the property of my husband.
(Or course, I'm curious how much choice anyone had. Many "surnames" that we know are either occupation or city of origin based. Or am I off on that, as well?)
I know people like lawyers celebrities and real estate agents have a vested interest in keeping the name they built a reputation around.
Also this is a random ass guess and backed up by absolutely no data, but I'd bet a sizable amount of money that couples that follow the traditional system of giving everyone the man's name have significantly more children on average than couples who don't, so while your situation may be a factor it is probably currently nothing more than statistically noise.
FWIW, I think you made the right choice. Expecting women to lose the familial history via naming should seem pretty ridiculous in this day and age but it is one of those things that flies under the radar even for a lot of people who are otherwise pretty enlightened about gender issues.
Thank you for your kind words.