Have I tried death? Yeah, I think I've tried it many times, but not in this life so far.

I would leave a note more like this:

If you are reading this now, I am dead, and let me tell you it turned out to be pretty wonderful. No one tells me what to do here. There are no bosses, but there are many friends. I see things with such greater clarity now, and no longer feel lonely, small, and vulnerable. The things that worried me during my recent "life" seem like mere phantasms now. There's no physical discomfort of any sort. I've had a chance to review all the events of my recent life, and I see now what the point was to it all, and it finally makes sense. If I'd had any idea it would be this good, I might have been tempted to die a lot sooner. Don't worry about me, because I have never felt any better than I do now.