Why wouldn’t someone prefer to be known for ending poverty or hunger rather than being richest for a period of time?

For example, if you were a multi billionaire and used funds and resources to end hunger in a country like USA, surely you would be remembered fondly for a lot longer than being named richest person between xxxx-xxxx?

Edit/update/clarification:

My question is not about “how” you could or even “if” you could. My question relates to the legacy one looks to create.

Even if you were known to be the person who provided meals to all or parts of the population to greatly reduce or impact these issues.