That Buffet quote certainly reminds me that the rich are different from you and I. He could also hire those 10,000 people to do AIDS research, etc., but he really wants to die with the most toys. "Charity" can have them afterwards.
Relevant Louis CK:
https://www.youtube.com/watch?v=lC4FnfNKwUo
I drive a cheap Honda Fit, not an Infinity, but the concept still applies to almost everyone who lives a decently comfortable western life.
Still, the charities he is giving his wealth to will get some of this benefit!