Those who believe in pre-determination ...

Those who believe in pre-determination/pre-destination are, maybe, just tools in the "hands" of (who?). Some superior being using these believers just as a puppeteer operates the marionettes? Nothing they will do will influence the outcome that already has been determined. These believers will try to have as good a time as possible; they can never be sinners, and therefore they need not try to bribe God to forgive them any sins by giving donations to clergy.