... not to keep putting the birthdays of friends and friend's children whom I do not keep in touch with on a regular basis on my calendar. It's just too much clutter. If I get a birthday card from you, then you'll get one from me. Otherwise, I'm reserving that space on my calendar for more momentus notes like "cleaned the basement" or "fertilized lawn."
P.S. So far I am winning the war with the doughnut.