I've never met a flat earther, I've never even heard someone preach it's glories. Did your parents raise you in the flat earth society?
I've had people say I'm not saved, or believe heresies, yes. I've never concerned myself with them because I know Christ myself, no need for any other mans approval. Christ shows no favorites among men, He favors those who believe what He says and follow His commands. To love the Lord your God, and to love your fellow man. These are His commands.
I don't see your situation as a dilemma, more like a quest to prove yourself correct over the spherical nature of the earth. Flat earth is a kooky belief to me and not something I would ever debate, and I don't see you needing to convince anyone over it.
I was trying to draw a comparison between those who dogmatically deny a spherical earth and those who dogmatically deny evolution. I was hoping that you claiming to be an engineer scientist (and me as a biomedical scientist) could empathize with my dilemma over evolution and being rejected by organized religion for believing it, because an engineer would find the dogma of a flat earth ridiculous.
IOW, I find the denial of evolution by theists just as ridiculous as an engineer would find the denial of a spherical earth as ridiculous.
As it is written, this life for those in Christ is about righteousness, peace and joy in the Holy Spirit.
It is also about truth. If the church promotes error (denying evolution) then no amount of supposed “righteousness” can cover over that. They are a religion who claim the name Christ but in fact lack the Truth inherent in his nature.
As it is with the immature in Christ, like those who cling to food laws and such, some day they may think better of it, Lord willing. So it is with immature beliefs of science.
Science and reason are the only bulwarks standing between belief in superstitions and belief based on truth or knowledge of the divine. For it is by evidence and reason (Greek: Logos) that we can know the heavens and earth were made by God, not because Genesis chapters 1-2 say so.
For example, it is rational to perceive both good and bad existing in the world long before humans existed. In addition, it is rational to perceive everything happens for a reason (science upholds this premise). These would be the naked truths evident to all.
Therefore, a rational soul who recognizes good exists and is caused by something (or someone) would seek to know that Good, hence the motivation of mystics, gnostics, heirophants, philsophers, etc., who were all seekers of the divine Good or cause of all things. Given this paradigm, who are the irrational but religious fundamentalists (those who choose myths over truth) and a-theists (those who deny a cause for Good in all things).
What matters is Christ because if one does not have the love of Christ then they have nothing. Nothing at all. Not even the correct scientific beliefs matter.
True, LOVE is a virtue manifest by the world ordering cause. But so is TRUTH. Where does that leave those who deny it?