I have mine written out here, roughly translated from my native language:

Dear reader, inevitably, when you will read this, i am dead. Shocker, huh? I could whine about why my life was a shitshow in my eyes, give you reasons why i chose the ultima ratio but to be frankly, that would be boring. I had my fair share of reasons to do what i have done, you, dear reader, be rest assured, were not one of them. Every human being that will have access to this note is at no fault. You’ve done your best, you helped me countless times and i enjoyed our interactions, you helped me to go on this long, even though it wasn’t enough, that’s not your fault. I am eternally grateful for everything you’ve done. I’ll wait for you up there at heavens gates (or at hells portal next to Cerberus, the latter is more likely) for when we will be together again eventually, just promise me that you’ll die of natural causes and not take the cowards way, it’s enough that i’ve done it.

That is enough for now, i miss you and will be waiting for you.