Why

Why did the guys in Brokeback Mountain have to keep sending each other post cards? I seem to remember that there was phone service in the 1970s...


Update:

Michael writes: "Because a post card is so much more gay!
And besides a post card is delivered by a young boy from the pony express!"

Someone else mentioned that long-distance calls were still expensive and a big deal back then, especially out west. Yeah, but it seems like one little call to set up an annual fishing trip is worth the few bucks...