I am as certain that our current conception of heaven is not real as you are that ancient Egyptian burial practices did not affect the afterlife.

or pick up the Book of Mormon. Not to disrespect Mormons. I know and love a lot of Mormons actually. But when I pick up the book and read it, read about the history of the Church, I know 100% in my heart this is not an explanation of reality that is true. pick one up sometime; is it worth keeping an open mind about it in the sense as to whetehr it is true? My answer is no.

is it worth keeping an open mind about why people come to beleive odd things, social issues, etc? yes.

but not about the nature of reality in the sense of whetehr the book of mormon is true, whether heaven is real, or whetehr G-d nailed another G-d type being toa cross to die for our sins.