I have a friend that says the same thing, but he goes on to say it's because of "science."
I think, though I'm not sure how to verify it, that part of the problem is that they don't want to give up their sin, and part is that they want something more complicated rather than just believing in Christ.
Another friend says he knows he would have to become a missionary if he still believed. He claims a profession of faith in his past.
There's a few hitching points that seem common for people and it's not always "they love their sin and don't want to let it go"
Sometimes it's because there so much evidence that the earth is much older than what Christians proclaim it to be, I struggle with this myself, and don't buy the "well God made it look billions of years old even though it's only 6000 years old" why? to
trick people? Is that what God's about? trying to deceive people from believing His own account? Is that who our God is? Someone who's just deceiving people into hell?
So .. how do we reconcile, some people choose to do it by allegorizing Genesis. Me I think Proverbs 25:2 .. that is, God has not told us everything if He thinks we didn't need to know it, and that men will search out some answers themselves, though not have a complete picture of what actually happened until God reveals it. But here's the thing. God will destroy the world, and remake it, and in the past, God destroyed the world with a flood, and then repopulated it.
There's evidence of 5 mass extinction events in the past. Who's to say God did not create and destroy the world multiple times in the past and simply has not revealed it to us? It would not be relevant to Moses to know this information, it's not until we dug up fossil records that we'd have any reason to say "there's more going on here than what we've been told"
another hitching point is the
types of things that God has said is sin, like eating pork, or wearing mixed fabrics, or, all the way down to what are "thought crimes" like coveting and lust and anger. Comedian Chris Rock once said "I refuse to believe that on judgement day, my diet is going to come into question". There is somewhat of a point to some of that as well. There's no conviction of conscience for eating any particular food, and eating certain foods was not part of the moral laws that Jesus reiterated, the things that WILL convict a person's conscience, like stealing or lying or dishonoring your parents or murdering, everyone knows doing those things is wrong.
But nobody eats a pork chop and thinks "I shouldn't have done that, I've grievously sinned" unless they've been taught that.
and the point is.. the dietary laws were to separate Israel from the Gentiles, but once Jesus had fulfilled His work on the cross.. that separation was not necessary anymore, the disciples didn't burden the gentiles with the ritual laws, they only told gentiles to avoid a couple things like fornication and blood, and let conscience determine the rest, for obeying the moral law.
But because those ritual laws are still associated with the God of Abraham, people don't want to believe in such a nitpicky God that is judging your diet and whether you're wearing mixed fabrics.
So yeah you pair that up, not being willing to obey the ritual laws that seem just nitpicky that were never meant to save anyone in the first place, and scientific evidence, and flat earther Christians don't help in that aspect...
and it becomes very difficult for people to believe, and they throw the baby out with the bathwater in the process. Even if the most important aspects, that you were created by a loving creator, who you sinned against but He loves you so much that He died to take your place in punishment and redeem you... something that even my sister says sounds wonderful and she wishes she could believe, those hitches dismantle the whole thing for her.