The way I look at it is this: you love money, you hate GOD. If you give for the cause of others and help them out you are not loving money, so long as what you give is a genuine sincere sacrifice.
If a man with a million gives $100, thats pretty much pitiful and that man loves money. If a man with $1,000 gives $100 - thats tithing according to Scripture.
So Bill Gates being worth about, what $100 billion or so now? He gives $25 or somewhere around that, tax right off, so what? Have you heard Bill say "thank you Lord Jesus Christ" for his wealth? I haven't. But, I did see my XP crash a million times

lol