It has nothing to do with fear. Christians don’t follow God out of fear of hell. God never says or shows any actions that say “follow me or face hell or follow me or you will be punished”. God doesn’t rule by fear or control with fear. God knew that we would bring sin into the world, fail Him, disobey Him, do horrible things over the course of history, hate, be prideful, etc. He knew we would do all that before He created us, yet He still created us and gave us free will to decide for ourselves who to serve. And He didn’t stop there. He knew that we would need a way out of our sin, so we wouldn’t doom ourselves to hell. Even before He created us, He put a system in place that involved a sacrifice of a perfect lamb to allow anyone who wants it, the gift of life. He knew, before He ever created us, before we eer had the chance to fail Him, that He was going to give Himself up to our world, become a human, and die at our hands as the perfect sacrifice, all because of hw much He loved us.
God loved us first. So we love Him back. God served us first. So we serve Him back. God showed us mercy and grace that we never deserved, so we are grateful and show others the same kind of mercy and grace. And because He did good for us first, we show others that same goodness and kindness.
Now you might see it that way, and you are free to do so (free will and all), and I am not here to try to change your mind, just to offer the perspective from the inside.