It`s simple really,I grew up around arcades and pool halls,and yes it is a very male dominated hobby but then I like a lot things that are meant to be "guy things" (except girls) . I`ve never really been into the girly look,while my friends have "pretty" things around their house I have beer signs,model cars and pinballs.
Peach..

Peach..  you tomboy you!
my wife is the same, she's a bit of a tomboy here self, well alot of a tomboy really. my wife doesn't were dresses and girly things, i don't think she even owns a dress.
and yes my wife is into pinball as well and loves to unwind after a stressfull day by playing a few games.
and she likes listing to pink 
but she is not a member.... yet