How about stop with the assumptions? You are incorrect here, and only because you want to take an assumption that is very common for Christians who are reluctant to accept that not everyone has a pleasant experience being Christian. So instead of accepting facts, you all tell yourselves that "this person and that person just wasn't a "true" Christian to begin with."
If the doctrine of Eternal Security is true, I was "saved once" so I'm "always saved." And I know the church loves to promote the idea that those who leave were never saved to begin with, but that stems from the idea that Christians are so sure of themselves that they can't perceive any reason why someone would want to leave. So if they do, without even asking, it is judged--by humans rather than god--their faith was weak and/or non-existent and they weren't saved to begin with. But such thinking is to point out the splinter in the eye of another while ignoring the mote in your own eye, and to allow those with sin to cast the first stone - things Jesus clearly said not to do.
Yet tons of people believe in neither.
And, of course, 'tis better to reign in Hell than serve in Heaven.
And go back to a life of misery? To again worship a god who's book says a woman is to obey her husband, and neglects to say anything about slavery being wrong?
The Bible is very clear, that true believers are eternally secure and they can never loose their salvation so we can confidentially conclude that all those who are not true believers will never and have never been saved.
The Bible says that people either love God or hate Him, there is no in between or third option. We are all born enemies of God and we all hate Him because of our fallen state of birth and the inheritance of sinful soul. God is the One who saves us, none of us would ever choose to serve God if it was left up to us.
The Bible is crystal clear, God preordained everyone who would be saved before He created the world. He wrote their names in the book of life and He called His chosen the "elect", so we are the only ones who will be saved. The rest are called "the reprobate", they will never be saved and it's impossible for them to become true believers.
The Bible is very clear, it doesn't leave any room for error. I know most people don't like the way God ordained and commanded mankind to obey His rules. Many women don't like the fact that they are to be subservient to their husband and many other rules like homosexuality being a sin that's carries the penalty eternal torment in hell fire and many many other rules and commandments which unbelievers hate.
All true believers love Gods laws and commandments, we love everything He does and every single one of His attributes. I didn't always love Him, I only began loving Him when He converted me. The more I lean about Him, the more I love Him and hate sin so I love living to serve the Lord. He is going to punish all of my enemies with the worst imaginable torture for ever and he is going to bless the true believers with eternal paradise.