Lets start with "Don't be rude and obnoxious." That is a good place to start. Your insistance on Ezkeiel 18 being an event where something changed in how God viewed sin would be incorrect. You didn't show that it was an event. You insisted it was. That is not how conversation works. God correct
False Perceptions. I watched an interesting documentary on the Hittites where they believed that the sins of the father "Were bore" by the son. Given someone's dad was going to the worst place in hell, his son was going to as well. The one who sins shall die. The son does not bear the sins of the father. (Ezekiel 18)
Uriah and David show how God works.
David is "He whom I discipline."
- I will be his father, and he will be my son. When he does wrong, I will punish him with a rod wielded by men, with floggings inflicted by human hands. (2 Samuel 7:14)
- Thou shalt also consider in thine heart, that, as a man chasteneth his son, so the LORD thy God chasteneth thee. (Deuteronomy 8:5)
- For I am with thee, saith the LORD, to save thee: though I make a full end of all nations whither I have scattered thee, yet will I not make a full end of thee: but I will correct thee in measure, and will not leave thee altogether unpunished. (Jeremiah 30:11)
God chastises and rebukes those he loves. (Hebrews 12:6)(Revelations 3:19)
Someone who had a generational curse handed down to them may have been blind to it. They may have been going through depression, oppression, and a number of things, and didn't understand why their life was rough.