I'll only write an IRL note just to my family to mitigate their pain, explain my reasoning (briefly, not too long), and some simple instructions on what to do after my death (e.g. no funeral, save your money, just cremate, bury, w/e with my corpse, etc.). I am not going to bother with trying to convince an close minded and ignorant society of my reasoning as it's a big waste of time and effort to no avail. They are simply just going to try to make an example of me, so I'm not going to give them that chance.
As for people on here, well you all know my reasoning so my real reasons, rationale, logic is like an open book for you all and when the day comes when I ctb, some of you can carry my right to choice torch and continue the fight into the future. I figured that my 'true' note will be of use for you guys here to combat the pro-lifers and anti-suicide people out there.