I'm not the OP, but yes, I have a calendar with people's birthdays in it. Every computer since the 1980's comes with a calendar program, and now they sync to your mobile phone, so there's no need to pass responsibility for that sort of thing to Facebook.
I also send (gasp) paper birthday and Christmas cards to the people who mean a lot to me. And from what they tell me, getting a real card in the mail means a million times more to them, since they know I took time out of my life to think of them and didn't just click a button and move on.