Walk away . Take a break from the situation. Not have people in my life who treat me badly.
My husband and I have "rules for fair fighting" that include only fighting about the issue at hand and NO personal attacks.
Do you tell your children you hate them when you are frustrated with them?
My DH and I don't push each other to the breaking point. We swear but I don't allow swearing at each other or even flipping each other off, this includes 'I hate you'. We also believe that once you speak words, you can never take them back. More of spiritual believe but it governs what I say, however I've always been one to think about what I say before I say it since I tend to stutter when stressed, so not saying something I'd regret comes easy to me. My DH is more one to say things without thinking but he still has never said I hate you or sworn at me. We disagree all the time and get annoyed with each other but we don't fight mean.