How many people do you see with stamped-up passports married to people who’ve never left their state? That’s the pediatrician. Have you seen her w/UNIT or on Torchwood? She found adventure without the Doctor (and probaly less haphazard danger).

LOL what?  Is that a thing?  People only marrying people who’ve traveled as much as them?  I’m so glad I never date.  People are apparently jerks.

Anyway, sorry, no, you’re never going to convince me that “but her fiance had never been to outer space” is sufficient to get a character from point “I’ve had all the time travel adventures I need, too much destruction and death, I want to spend some time with my family and friends and fiance now” to point “Oh, hey, I quit UNIT and became a freelance alien fighter with Mickey, who I also married, what a coincidence, considering he is the only other character of color on this show!”