Will You Share?

I asked myself a question, thereafter to a few friends.

The question goes like this :

You and a little kid were lost in a desert/amazon. On day 7, the kid finish his food and water supply, but you still left with the supply which is sufficient to last 4 more days for a person, would you share it?

"YES!!!" we answered.

Then, here comes the second question, " then why aren't you giving away half of your money to those kid in africa ?"

So, would it really be a YES or NO ? Comments highly welcome ...