What does reserving judgments is a matter of infinite hope mean?

When we reserve judgment it means that we are delaying our judgment or our decision, generally about how good or bad some particular thing may be. This statement, that reserving judgments is a matter of infinite hope, suggests that we are being overly hopeful if we expect that by reserving our judgment, we will be able to eventually arrive at a favorable opinion. If we feel the need to reserve judgment, it's probably because the object which we are judging is bad.