In your reality does the Polynesian Chenyra fruit not exist because you've never heard of it? It is described as an oblong fruit about 5 inches long, and red when it ripens. It's mildly sweet with white flesh and small edible seeds.
Sorry, I didn't get your point well.
Anyway, about your specific example, what could be the difference for me between believing or disbelieving in the existence of the Polynesian Chenyra fruit if it can't be useful to me in my reality? In other words, why I should bother myself to find out if certain things not useful to me, in any way (other than talking about them perhaps) do exist or not.
I have a rock that I found on a hike in the Grand Canyon and it means a lot to me. What does it mean to you?
It doesn't mean nothing.
On my side, I don't judge anyone and I don't resit evil even if have all the necessary means to do it, do you know why? Because this hurts my soul. What does it mean to you?
Can you understand that a rational person acknowledges facts as being true outside of their imagination and dreams while the dreamer will also value their personal ideas that are largely irrelevant to anyone else?
You are right because, based on your definition of being rational, I can't be rational. Yes, I can't trust the imaginations of others more than mine
though I am glad you can.