Here is my fellow mate opinion regarding people who doesn't believe in the Bible and God.
The bible clearly states, with 100% crystal clear clarity, that the earth is flat and only ~6000 years old.
So no, I don't believe people that believe in flat young earth should be beheaded.
And all you have to do to see that the Bible is using figurative language when it talks about the earth being flat is look at the mountains and valleys.