Not Another Christmas Lawyer Joke

I read this joke a long time ago and can't seem to get it out of mind, so I'll share it with whoever.

A prominent lawyer recieves a phone call from a United Ways representative at Christmas season.
" Sir, our records show that you made $3.1 million last year and was wondering if you cared to make a contribution this year," asks the representative.
The lawyer then asks," Well, does your records happen to show that my mother is terminally ill and her monthly medical bills and medication expenses exceeds her monthly income?"
"I'm sorry, but no it doesn't," replies the representative.
"Then does it show that my brother is an invalid and doesn't have any income whatsoever?" asks the lawyer.
The representative replies, "No, it doesn't, I'm sorry."
"Well," said the lawyer, "if I don't give them any money, what makes you think that I'll give you any?"