oops, i forgot to put zero as an option! cause i always miss at least one by accident :/

I used to be really bad at it, but now that i'm married and always sexually active, I tend to make sure i take it ;P

usually at least one every month. Some months, two but not in a row.

It happens.

For me, I can't speak for others, but I like taking the pill daily because there are so many different formulations of it. If 1 doesn't agree with your body, there so sooo many other formulations to try. If you need high estrogen, low estrogen, the mini-pill, whatever and so on - there is an option that will likely work for everyone. Not all other birth control modalities offer that same amount of options and formulations that the pill offers.

Really, with any modality you use yourself (Nuvaring, patch, etc) there is always the possibility of user error. Many people take medication daily (blood pressure meds, anti-depressants, etc) with no problem. I think one of the problems with The Pill is that generally young women take it who have never taken medication on a regular basis before - so they forget, or they get busy doing something else and lose track of time, etc.