Is it your duty to give to charity?

By definition, in the United States, charity, or a charitable organisation is an organisation that is organised and operated for purposes that are beneficial to the public interest. And duty the moral commitment that results in action, and it is not a matter of passive feeling or mere recognition. When someone recognises a duty, that person commits himself or herself to the cause involved without considering the self-interested courses of actions that may have been relevant previously. This is not to suggest that living a life of duty precludes one from the best sort of life, but duty does involve some sacrifice of immediate self-interest.
So if it is our duty to give to charity, it means that we recognise that we have to give to whatever organisation because we have made a commitment. But when we give to charity, does it involve some sarifice of self-interest? No, it does not, and surely giving some money for a worthy cause cannot be a sacrifice of self-interest.
Therefore, it cannot be our duty to give to charity. Instead, I would say that it is very good that one gives to charity as that money may have helped some child pay his or her medical or school fees, or may have helped an elderly person find his or her next meal. Whatever it is, that money of yours is not wasted.
However, giving to charity is not duty as we give to charity out of our own free will. If someone from an organisation approaches us and askes for a donation, if we choose to donate, that is good, definitely, but if we do not, that does not mean we are bad either. The decision to give is made solely by ourselves. Do not get me wrong, I am not against charity but if it is our duty to give, everytime a person approaches us for a donation, we MUST give, if not, we would be perceived as bad or irresponsible people as we did not do our duty, and that cannot be the case.