I guess I should disclaim that I do not want OP or anyone on this site to make a life-or-death decision based on whether the metaphysical/paranormal exists or not. I got somewhat heated in the last post and exaggerated my belief that there is definitive proof regarding these topics. I will however maintain that there are endless anecdotes (yes, I know, anecdotes bad) on the Internet about experiences that have several similarities to one another. Would it not stand to reason that even if some anecdotes aren't accurate accounts of the experience in question, some jump to conclusions, and some are completely made up, at least some out of those given an adequately large number of them are legitimate accounts accurate to the original experience that aren't explainable by current materialist theories?
I also forgot to mention last post: even if there was absolutely no proof of the metaphysical/paranormal, absence of evidence is not evidence of absence, and it would not change the objective fact either way. Yes, this does mean that there is still the burden of proof for those trying to argue for the existence of such phenomena, but we need to keep in mind that it won't chance objective fact either way, and all that is left then is a decision between "I won't believe in the metaphysical/paranormal until there is more definitive proof of such" and "I will have faith in the existence of such because there's still a chance it exists", or for some "I've had personal experiences/have read and heard of both anecdotes and scientific studies supporting the existence of the metaphysical/paranormal, so I choose to believe in it". Both are valid stances to take, I happen to fall in the latter and you happen to fall in the former. Nothing wrong with that, as long as we don't make decisions of morality in the faith of either position.
(This is mainly why I thought it wasn't a fair judgement to definitively label OP's idea as a "misconception" and compare it to cases such as a waived debt when we know for a fact the truth objectively speaking differs from what the person who we're talking about thinks. We're not as sure about the non-existence of QI or such.)
Now let me put in another little note here: I have not heard of any experience report where QI resulted in the experiencer being transported to a time "before their life went haywire". I have heard of a quantum suicide where someone attempted to shoot themself, immediately snapped into a third-person perspective as the attempt succeeded, and then "woke up" to find the gun had jammed. So especially in OP's specific situation, I cannot recommend believing in that specific notion, as it seems rather dangerous. This is not to say that is impossible, but I will once again emphasize that no life-or-death decision should be made following these sorts of ideas that don't currently have any definitive proof. We can have our beliefs, but given there's no physical evidence of such (and there may never be due to a variety of reasons) we should abstain from that. If that's the only or main reason for one's suicide, I say that we're all going to die anyway at some point (or if QI is real and happens even to people of old age when they "just keep living a few seconds longer", that may be another way to find out) so we can wait until that happens, as if there's no need to stop suffering then there's no need to cause it for the ones we cherish in our lives.
Regarding Wikipedia: I'll admit that I haven't researched much on paranormal topics on Wikipedia, partially because of my belief that Wikipedia presents biased material regarding a few things, including the metaphysical/paranormal. I personally wouldn't bother with editing it to include such sources, as I'm sure it would get removed for one reason or another. Although it might make for a fun experiment, there's probably people who've attempted before and have found the exact same thing.
It appears we'll have to agree to disagree on these topics, and as you said there's no real point in debating any further as it's unlikely either of us would be able to change each other's viewpoints on it anyway. Now that I've made it clear that I do not want our discussion, or any of these types of discussions, to influence anyone's decision to make suicide, including the OP's, I think we're good. Though, if you have any comments on what I've said, feel free to reply. I also hope you have a nice day and, most importantly, am wishing you the best in your future!