People often accumulate a lot of bad feelings about other people, simply because they’re in some way unable to articulate how they feel about another person without offending them.
Or, bad feelings just fester like an open wound, when things get to the point where you can no longer talk to the people you’ve got issues with.
Get this crap off your chest! Just say what you damn well feel.
Sometimes, you’ve got things wrong, and giving the other party the chance to have their say can sometimes help you see things from their side as well as your own.
And on those occasions that you’ve got the situation dead right, you might just catch the other guy / gal on the back foot hard enough to make them think…
