To understand this, one needs to understand how bullying works.
Bullying starts with a "testing" of the potential victim/non-victim by an act of aggression. At this stage, it is usually with words. The aggressor will make fun of the victim.
STOP HERE. This is the crux point. The victim's upcoming response determines whether or not he becomes a bullying victim. If the victim responds in a way that is interpreted as submissive, INCLUDING "JUST WALKING AWAY" or "IGNORING" the bully (TERRIBLE ADVICE YOU SHOULD NEVER LISTEN TO), then the bully has just asserted his dominance without consequence. This MAKES THE BULLY FEEL STRONG and powerful! He has just discovered that he can show off to anyone that he can make a room full of people laugh at you at any time of his choosing, without any reason to fear retribution!
From the bully's point of view, he's having a ball! This is going to make the bully want to DO IT AGAIN, just because it makes him feel great about himself to be able to do this. Meanwhile, the victim's self-esteem is crushed; angry with the bully because in some way he believes what was said to him, but more importantly the true reason he becomes angry because he (falsely) believes he has no control of his terrible situation. "This guy just came by and wrecked my feelings, everyone's laughing at me, and there's nothing I can do about it!"
By human nature if we are doing something that we enjoy, and don't suffer a consequence for doing it, we are going to repeat doing it. And this is how a pattern develops. The bully gets used to being the bully, and the victim is defeated and accepts that he is to be the bully's punching bag. Onlookers see this relationship between the two and laugh at the victim along with the bully and even join in because "Hey that looks fun. Let me try!" Everyone's going to be punching the human punching bag now and having a grand ol' time doing so.
This stands true for anything. If you enjoy kicking dogs (sadistic bastard) you're going to kick the nice chihuahua before you even think of going near the angry rottweiler or german shepherd. Why? Because there's a consequence that you'll get your neck ripped out by the latter two.
In bullying, the dog's ferociousness is equal to your ability to smartly turn the tables on your aggressor with a sharp wit. If you're under 16, your fists may help the situation for now, but ultimately it's your ability to fight back with words of your own that will prevent you from becoming a victim. Watch how a comedian defuses a heckler in a crowd and you've got yourself a perfect example of a backfired bullying attempt. People that find themselves bullied a lot lack this particular ability. People that are great at it almost never have this happen to them. (I say ALMOST never because even the comedian gets the heckler's comment every once in a while. But 99% of people don't dare.)
The reason the victim struggles so much for such a long time is because the bully is crushing the same self-esteem, SELF-CONFIDENCE and courage that the victim needs in order to stop the cycle. Without it, the victim feels worse and worse about himself, helpless to stop even the most common onlooker of the bully's "show" from making a fool of him as well.
Which brings me to the answer to your question (finally lol). Yes the bully is an *******. But *******s are a part of life. Like all parts of life, you need to learn how to healthily deal with them. It's the same reason you can't blame your car for running out of gas. You need to accept that as the owner of the car it is YOUR RESPONSIBLITY TO PREVENT IT by ensuring there's always enough gas in it. The truth is that the victim is at fault because he allows it to happen. At the crux point mentioned at the beginning of the article, if the victim had turned the tables on the agressor, the bully would have LOST in that scenario and would have instead felt like an IDIOT. He's not going to make himself feel like an idiot again. Others would have laughed at his feeble attempt to dominate and the (non)-victim wins! Guess who feels good about himself now! "He's not a chihuahua, he's a rottweiler!" Think anyone's going to be kicking him?
Of course with already established relationship patterns it's not so simple to break the bullying cycle. Since you've been a chihuahua for 4 years, any WIN in your favor is going to be seen as a fluke. You need to RE-ESTABLISH yourself as the rottweiler with CONSISTENT wins like this if you are going to expect to be seen as a changed man. This can take years, but is worth every second.
The trick to this is that the victim must realize that neither the bully nor the feelings that are invoked in himself can really stop him from standing up for himself. Once the victim feels "defeated", the bully can sense this and can tell that there will never be any consequence. So the bully will forever have a field day and be invincible. But, when the victim realizes that his resolve to improve his ability turn the tables on his bully can never be broken, he at least can try to fight and the better he fights the better he feels.
Calypso545