The secular world only cares about motivation; they want motivated people. People with drive and self-persuasion.
But Christians don’t want just motivated people. We want people with specific, godly motivations.
As an example, you could work for something like WorldVision for any number of motivations. They wouldn’t really care what those motivations are – just that you’re motivated.
But just to help do the washing up at church… If you don’t have “responding to Jesus’ love” as part of your motivations, I don’t really want you joining in.