Just putting this out there as a Scotsman in a strange land - but I have no idea why Gin is considered a girly drink.
It just is.
Like the tides.
Hell - I genuinely never knew that it was widely considered otherwise until I read this thread. My instinctive, cultural, nay, genetic response to hearing the word Gin is to give a slight smirk and to contemptuously look into my own drink while my face automatically goes into 'you must be joking' mode.
Nothing we can do about it. Conditioned response.