Is there a significant difference between charities and companies?

A business is the same as a charity.

There is no important difference between the two types of organisation: the both are possible to refuse and advantageous to at least one participant. In the case of charity, it might be the case that the donor does not benefit, but if we look closer, we might notice that there is a benefit to the donor in a subtle way. If not, the only difference is that one party is left unaffected, and the two are better off in a business relationship.

In a charity we ask for nothing in return, we are not getting a bargain, or perhaps we are. Do we not enjoy charitable work? If not should we do something else instead?