The premise is illogical and not just in the “hell” example. What the person is saying is “I could never believe in a God that doesn’t behave exactly how I personally would want God to behave.”
Cases in point: Detroit, Venezuela, North Korea.
The problem of of hell is that it assigns infinite torture as punishment for a finite number of evil deeds committed during a finite life.
God does not send people to Hell, they condemn themselves by their actions in this life.
We all make multiple choices in life, some are life-affirming, others are an election for death of the spirit. We have all made an election, sometime or another, for the spirit to die, yet, here we are (most of us, anyway), for whom that wrong decision has been forgiven, and the opportunity was afforded yet again to make the life-affirming choice.
Hell exists, in the metaphysical sense, because Man was given free will, and has endless opportunities to make the wrong choice, sometimes over and over, at which point, the path to redemption gets harder and harder to regain. Not impossible, never was and never shall be, but much more difficult. First comes admission of the lapses, to both yourself and to the Deity, then the task of discipline that atones for the lapse, and lastly, the surrender to the Grace given without reservation.
The message of Christ has this little hidden barb - it is up to the individual to ASK for redemption, it is by no means automatic or preordained in any way.