OK. I'm not sure if you mean that statement to stand on its own, or whether I should still go looking for some of the other posts that you mentioned. If the former, then obviously I have try to examine whether I find it useful enough to believe.All I am saying depends on one axiom of existence: "If I did not exist, there would be nothing."
If I did believe it, then I suppose one of the concrete consequences would be that I would make no provision for the support of my loved ones after I die. Because they wouldn't exist. Nothing would. Yet I do intend to do just that. (For example, I have life insurance.) Why?
Because I use the usual process of Inductive Reasoning to conclude that they will continue to exist after I die. I've observed other people, like my grandparents, dying. I've observed from their behaviour, similar in lots of ways to mine, that they probably have minds like me. So things with minds can stop existing and the other things with minds continue to exist. At least, that's my working hypothesis.
I can imagine my non-existence before I was born. Does that count as "truly"? I strongly believe that there was a world prior to my birth. I may be wrong. But it seems like the mental model that best fits the evidence available now. So it'll do me for now. Possibly for the rest of my life.I keep wondering if anyone can imagine one's nonexistence, truly. Others', yes, but mine?
I've also experienced going to sleep and then, seemingly instantly, waking to find that several hours have passed. Almost like I didn't exist during those hours. It doesn't seem too much of a stretch to think of that going on forever. Does that count as "truly"?