Absolutely, sin has consequences. I never said otherwise. You seem to be saying then, if God doesn’t torture the unbelievers forever, then the sinners get away scot free. I don’t buy that for an instant.
For one, Hell does exist for a while and I believe that our concept of time doesn’t exist in Hell. In other words a minute in Hell is probably like a thousand years. So, no one wants to be in Hell, even if just for a minute.
Two, imagine standing before God our Father and Creator, and seeing the hard proof of the glory that He is and the wonderful life you could have had with Him. Then seeing the proof of your life and where you rejected Christ. That moment, in and of itself will be crushing. THAT is what all courts here on Earth are actually working for, for the perpatrator to actually and fully realize what they have done and what they have lost. The Great White Throne Judgement will do that.
God is Just and God is Merciful. A just God has a complete and thorough judgement. A Merciful God doesn’t torture his creation forever.
You’re confusing consequences with retribution.