My father wouldn't listen when I tried telling him, so I embarked upon a hedonistic lifestyle of excess (and spending his money) for years. He keeps threatening to disown me, but I'm not seeing any follow-through on that end.

If he gives you a hard time, I suggest very very explicit PDA, with persons considered completely unsuitable. If he's anything like mine, he'll very quickly be thrilled that you're out of sight and out of mind.