This man has the right mindset.
What's the point in believing in something if it makes you feel shitty? Truth and knowledge are arbitrary from the sole perspective you have, your entire model of reality–your subjective reality, is created by what you believe. If you believe that systemspace exists, it might as well. There would be no difference if you did or didn't, except psychologically. Believing does offer you some peace of mind. You get to live another life, start over, learn from your mistakes, and most importantly get a fresh reality that isn't so boring. And even if systemspace doesn't exist and you perished forever, you wouldn't be able to regret believing something ""foolish""", since you'd be dead.
That's a pretty good philosophical argument for any kind of faith or spirituality, after all, ignorance really is bliss. That's probably a little hedonistic though. Really up to the individual I guess.
Unfortunately, really believing in a comforting truth isn't always easy. It's a surefire way to modify your perspective on life for the better, but that doesn't mean it's easy. Personally, I haven't seen very much scientific evidence for the collective Systemspace theory. Even if I wanted to believe in it, I couldn't really. That doesn't mean I would never consider it. I hope that's at least somewhat understandable.