Our Christian life can be about doing good simply because it is the right thing to do, in accord with God’s will. The threat of Hell kind of underminds our freedom. Not that I am arguing one way or another about its existence.
I’d also like to add this:
The knowledge of the realities of heaven and hell are helpful. Knowing about hell is helpful. It helpfully keeps us alert to the urgency of choosing between good and evil, in stark contrast to the lulled-to-sleep apathetic conscience of someone who believes there’s always ‘more time’ to make a better choice later, because they think they have endless reincarnation cycles ahead (what I used to believe). Or because no matter how much they prioritize their own material prosperity in this life, and sleep with all the attractive partners who invite them, or do other things that many consider spiritually ‘harmless’… Hey, even if it turns out those things weren’t ideal, they’ll immediately go to heaven after they die anyway (maybe after a single finger shaking and ‘tut-tut’), so why not also do everything that’s immediately gratifying now? Why even bother learning why some people think you shouldn’t take advantage of all these immediately gratifying opportunities available to you? If even they agree it makes no difference in the end and you all get the same ‘big’ reward after death, why shouldn’t you also take advantage of all the little ‘mini’ rewards that tempt you in this life? It’s not your fault others don’t have the same mini-rewards available. And hey, even if it is your fault – so what? God’ll probably gift you with a total personality shift at death, you’ll say sorry, then all will be well.
At that point telling people to take up any kind of cross in this life, starts to seem evil. Like reducing the sum total of happiness humans will experience across time and space. If everyone goes to heaven no matter what, then afterlife happiness is totally taken care of. So all we need to concern ourselves with is being as happy as we can before death, too. That’s what ‘love’ becomes: not helping each other towards an objective reality of heaven and union with God, but rather ‘helping’ each other feel as subjectively happy (according to what each person
says makes them happy) as possible in the immediate present. Because all that ‘God’ stuff and ‘eternity’ stuff is taken care of for us behind the scenes; we don’t have to be involved.
And then you get into the tangent of all the different things people say makes them happy.
Spoiler alert, it doesn’t include a lot of disciplined virtue or self-sacrifice or respect for objective truth.
It doesn’t look a lot like Christianity.
I can only reiterate: knowledge of hell
increases our ability to act freely. It doesn’t undermine it. Rather, it actually undermines our freedom if we believe there is no hell, because this belief tends to lead to spiritual apathy and laziness, and an
“I’ll consider thinking about or acting on questions of god and evil tomorrow… maybe… or in the next life” disposition. We end up drifting (typically from sin to sin). That’s not freedom.