A society's DNA is not its mythology. A society's DNA is a set of
memes that it shares, which can easily originate from outsiders. However, memes can easily become parasitic; They spread themselves, at no benefit, or even at cost to the organism believing them. It is these that should be eliminated entirely, in all possible guises. By contrast, some memes are incredibly helpful knowledge, and should be spread as much as possible.
The majority of most religions are parasitic memes. Removing them will almost certainly bring benefits. Creation myths come in this category as well, since they provide entirely empty answers to questions we didn't have an answer to at the time. This is fine as long as we don't have an answer, but when we
do have an answer to replace them, they should be discarded.
I think you presuppose a lot of things that could have you laying an ax at the base of the wrong trees.
Would you like to be the person who has the task of deciding which trees to cut down and which ones to foster? Should we even manage our forests that way anyway? Should the lumber jacks get to decide which trees are taken and which are left? Should the ranchers get to decide? How about the tree-huggers? How about the farmers? Are they wheat farmers or sugar farmers? Are they sugar beet farmers or maple syrup farmers?
My point is, what one views as parasitic and useless another views as their source of income and employ and has a vested interest in their preservation.
Who should decide to start laying waste to things and upon what basis and criteria and who can be an impartial (grim) judge (reaper)?
What about the pride of evolutionary theory called 'survival of the fittest' by means of 'natural selection'?
How about nobody lays waste to any trees unless they own the trees and have the explicit right to manage their plot as they see fit?
You manage your trees and I'll manage mine...
If I have a plot of sugar maples and you have a plot of spruce then if your spruce trees cast seeds in my plot of maples I'll pluck out your spruces. If I have maples cast seeds in your plot of spruces then you pluck them out as you please.
So, then, the question becomes, whose plot of trees are we? What are the boundaries of our plots and the domain upon which we may cast our seeds of influence? Who is the landlord of our plot of ground now and in what way will he communicate as to what trees belong and which should have an ax laid to their base?
This entire dilema is worked out in the realm of religion.
It is the politics of the landlords of the planet.
You talking like you are going to eliminate religion sounds to me the same as an acorn in a plot of oak trees postulating about the destruction of his landlord. If you had success your plot will simply be picked up by another landlord who may not even want oak trees at all and come in and just wipe you off and put in something else to his liking.
Man seems to think he is the absolute pinnacle of intelligence and organization and that no higher unseen powers operate above him. This is the pipe dream that causes a lot of unnecessary strife.
They key to having things work is if you want to be an oak then see to it you germinate yourself on a plot with a landlord favorable to oaks. And so on.
And, by all means, when the landlords are speaking their will via holy writ, handle it with great care because they do speak and their words are certain, whether you understand them or not, they shall come to pass.