The curators are not fighting for scraps, 25% is a pretty decent amount to get. Sure if we would compare it to just self vote it may seem like scraps. But what is a person getting when they curate? They get the leverage of potential to build up Trust and Relationships with a specific person.

By showing you share some of your influence to someone else instead of self voting. The Tokens are never the real leverage. Relationships and Network potential that is the real value. This all comes down to build up Trust with other humans. It's not really about the Tokens. The Tokens works just as blood or electricity.