One can take seriously YEC as a working hypothesis because the risk/reward of it being true. We take the possibility of tornadoes seriously in some regions of the USA, it doesn’t mean with think a tornado will hit, but from a standpoint of belief we accept it as a possibility.
At some point along the way a possibility starts to become more believable as a probability or reality. I live my life like YEC is real much like I wear safety belts because I see all these people on the highway texting while they drive. But most days, of late, I find it simply to be hard to believe otherwise.
On another note, I simply have a conscience. I do not believe the evidence unequivocally favors Old Earth. If someone loses faith because they are told the evidence is unequivocally Old Earth, that would bother me. The fact is, at the very least, we need to learn more.
I think the linked video to Bryan Nickel is an excellent video essay against the stellar nucleosynthesis/Old Earth/Old Solar system theory. I can’t in good conscience tell a Doubting Thomas who is convinced that Genesis is to be read literally, but is doubting the Bible altogether, that Old Earth is unequivocally true. It is not. That’s not to say YEC doesn’t have problems. It does.
My gambler type views are no different than a lot of practical issues in life, like say a Jury deciding to acquit based on reasonable doubt even though there is a cloud of suspicion. So even if the weight of evidence might be one way, reasonable doubt says to acquit.
I can’t in good conscience be the cause of someone losing their Christian faith by saying “Old Earth is unequivocally true” or “YEC is guilty of blatant falsehood.” I acquit YEC of being false at this time, and encourage freedom of exploration of the hypothesis.
I think Jesse Kilgore might still be alive today and a Christian if he heard the Creationist case, and not just OEC, or Young LIfe/Old Earth, but even YEC. Instead, he read Dawkins book, and according to his father committed suicide. I don’t want stuff like that on my conscience.
TL;DR I believe YEC, have some doubts, but fully convinced its a good wager over atheism.