once every four years

leap year is such a strange day.
i don't even get it!
what's the point of having one extra day every four years?
why??
all it does is make that 64 yr old actually 16!
and the 44 yr old 11
that's weird
and that sucks.
why would you want your birthday, anniversary, or any other special event
on leap year?
so you can only celebrate it every four years?
i'm confused!
so if anyone knows why there is such a thing as a leap year,
please be my guest and fill me in!