WellspringOfNegativity

[Sometimes ProgrammingIsNotFun, because]

• It is easier to complain than to fix things. You have a ChronicComplainer. (Or you are one.)
• It is easier to find flaws than to create.
• Some people feel that making positive comments is unnecessary, or "fake", so they only make corrections and negative comments.
• Some people can't resist disagreeing, even with things they don't understand. See PointyHairedBoss.
• The lure of unfulfilled potential for our current project blinds us to our past accomplishments.
• What's right is simply right, that's taken for granted; what's wrong needs fixing, why haven't you fixed it already?