With all due respect, I don't want to hear about Lebron or Curry. To me, the GOAT will always be Michael Jordan. He's who all us 90s kids grew up with as the dominant player. He was beyond dominant. His playing was transcendent. It was a different game back then though. Comparing the players of today to the players of the 90s is a bit unfair in that regard. Guys were playing differently back then.
If you're not sold on Michael Jordan, just load up Youtube and search for Jordan highlights. That'll teach you why we love him. I'll spend entire weekends watching them. Then you end it all with Space Jam. Space Jam is not a great movie, but it does have both Bugs Bunny and Michael Jordan in it, so it's worth watching because of that.