Motivators

[JohnDB]

It has been said that people have two basic motivators. The metaphorical carrot and stick.

The promise of pleasure (the carrot)
The fear of pain (the stick)

If this is so true then how does giving fall into the mix for Christians.
Giving is an essential nature of being a Christian...but it does seem to go against the motivators.

If a person gives up rescources then they are in a situation that removes the promise of pleasure of enjoying those rescources in the future and increases the likeliness of fear of pain in not having those rescources later when really needed (IE they go hungry)

But people still give and it is an essential part of the Christian attitude.

Does anyone else see a major paradox here?
Or am I the only one.