I (and my DH) hated my DH's last name. It's awful.
I loved my maiden name and had it for 35 years. Did not necessarily want to change it because I was a professional/was known by my last name.
DH told me not to change it.
In the end, though, I did change it because we wanted children and I wanted to have the same last name as my kids (we have 3 now).
I grew up in a household with three names -- my stepdad, my mom's maiden name and my name. Although my stepdad and mom didn't care if my friends called them by my last name it was sort of annoying. I felt bad for them and felt like I needed to correct my friends, etc. We also got 3 of everything-- 3 phone books, 3 sets of junk mail, 3 telemarketer calls, etc.
Overall, it wasn't THAT big of a deal that we all had different names but having that experience already, I am happy now that everyone in my current household shares the same name.
Of course, my DH and I both regret we just didn't pick something totally non-awful when we both had the chance!