I look forward to the day my dad dies
Why would you wish death upon your dad?
I'm going to be a billionaire on that day.
Even so, you should not be excited for it. That is your dad and it will be sad when he dies, regardless of what benefits you will reap from it.
Never expect something so drastic to happen, some things are better to plan in advance.
I'm not sure what you're trying to say, but all I'm saying is that you should feel sad if you dad dies, not happy.