>That’s just an echo of a religious-age idea that one’s life “must” include suffering

it's not a religious idea. You find it in Nietzsche as much as in anyone else, maybe the most atheist philosopher to ever live. And the point isn't that you suffer for the sake of suffering, it's that engaging the world rather retreating into your own comfortable feelings always includes the possibility of suffering.

Going out into the world, actually risking something, can mean rejection, danger, suffering and what have you. Talking to ChatGPT doesn't. You don't need to necessarily suffer, but you do need to be brave enough to accept the risk of it instead of hooking yourself into your own brain by talking to a bot or simply retreating into fiction.