I would politely, but urgently suggest that if you're thinking a lot about scenarios where you could justify suicide, you might not be as interested in the scenarios as the permission you think they might give you.  And you might not realize that!  Motivated reasoning is a powerful force for folks who are feeling some mental troubles.  

This is the sort of thing where checking in with a loved one generally about how they perceive your general affect and mood is a really good idea.  I urge you to do that.  You're probably fine and just playing with some abstract ideas, but why not check in with a loved one just in case? 

I have a (vague) intuition that this is a bad idea in expectation.

And I have a (vague) intuition that one should focus on working to make things better (in particular, in a situation of inevitable technological singularity, to focus on trying to make it better and on trying to make one's own trajectory in it better).

The epistemological weakness of my position here is that I am transferring my intuition from more conventional situations to something which is very much outside our distribution, so we might find ourselves not really prepared to think about this adequately.

Let me try again, from a more abstract epistemological position.

If it is a bad singularity and it really wants to hurt you, it probably can resurrect you and such, so it's not clear how much of a defense this is.

But if it is a good singularity, it would probably respect your wish to die, and then you'll miss all the potential of ending up in a good singularity (the chances of that are, of course, subject to a rather intense debate these days, but even Eliezer does not put those chances at exact zero).

This does seem to point towards dying being negative in expectation. (But in truth it might depend on your estimates of chances of various scenarios. My estimates of chances for positive singularity might be higher than your estimates, and this might color my judgement.)

(It is such an unusual situation that it is difficult to be sure. Speaking for myself, my own curiosity is sufficiently insatiable that if it is going to happen I want to see it and to experience it in any case, and to put efforts to make it better, if it's at all possible.)

I'm not convinced you can get any utility from measure-reducing actions unless you can parley the advantage they give you into making more copies of yourself in the branch in which you survive. I am not happy about the situation, but it seems I will be forced endure whatever comes and there will never, ever be any escape.