"The staff at a local" joke

The staff at a local United Way office realized that it had never received a donation from the town's most successful lawyer.
The person in charge of contributions called him to persuade him to contribute. ''Our research shows that out of a yearly income of at least $500,000, you give not a penny to charity. Wouldn't you like to give back to the community in some way?''
The lawyer mulled this over for a moment and replied, ''First, did your
research also show that my mother is dying after a long illness, and has
medical bills that are several times her annual income?''
Embarrassed, the United Way representative mumbled, ''Um... No.''
''Or,'' the lawyer continued, ''that my brother, a disabled veteran, is blind and confined to a wheelchair?''
The stricken United Way representative began to stammer out an apology but was interrupted when the lawyer added, ''Or that my sister's husband died in a traffic accident?'' the lawyer's voice rising in indignation, ''Leaving her pennyless with three children?''
The humiliated United Way representative, completely beaten, said
simply, ''I had no idea...''
On a roll, the lawyer cut him off once again, ''So if I don't give any money to them, why should I give any to you?''