You’ve got just one shot to save the kingdom, the love interest, the world, the day. Real life doesn’t usually work like that, but the reason we tell stories isn’t to experience the ordinary. We read to participate in the extraordinary, and we put very high expectations on protagonists. What are they there for if not for redeeming the coupon of salvation?
Of course, it doesn’t always work out that way. Sometimes the day in question had a different savior penciled in on the agenda. Sometimes destiny calls and has to cancel the date at the last minute.
Sometimes it’s better that way.