Why is it..

Its because the complicated stuff is out of their reach and they dont like to be fooled for that which they can easily reach, like wet paint. You tell them fantasies and fully imaginative nonsense and they will believe you cause they can neither attempt to prove it nor bother about doing so. They'll say "Wow.." and simply add it to their so called "awesome things" list. But when you tell them simple but less known facts then you are messing with them on their own turf, and man .. you'd surely loose. Cause they wont let you prove them wrong. Somebody said it right - "Dont argue with a fool. They will drag you down to their level and then beat you with experience".

You cannot touch the stars. You can touch paint, chairs, cars or other stuff. That's why.....

Yes, I have been through that. When things which are easy to believe, they make things hard. I don't know maybe they are reluctant to believe for some reasons like they are just being fooled.