What tetra sais is exactly what happened to me.
1) it is very clear from science that the flood did never happen. jesus testified to this, so that did make jesus not very credible.
2) all the effidence does point out that evulution occured (or at elast partly) and that humans are older then the 6000 years, taht not all animals ete grass etc. for the flood.
So there was not a single Adam and Eve 6000 years ago, so there was no original sin, so no messiah needed, so no paradize.
This is not a small doctrine like 1914 or so. This is the basis, that I discovered was not true. Where is almost nothing left without it, so that is an eye opener enough.
I could have lived with the 1914 mistake, the UN issue, the child abuse cases etc. And still believe most of it, and still be a believing sheep. I )like many others) never believed that FDS was without error anyway.