Worst dream..

Last night I had a dream. It was a dream I woke up extremely angry to. I was in the basement of this big building. The room seemed like a football field long. All the walls were white and it had some tan and wood office desks around. I see my mom standing on the other side of the room. I see this man come up behind her. He wasn't wearing some creepy ski mask or a stalking around his head, but he was wearing all black. I can see this as if I was standing right next to them.. He started exchanging a few words with my mom, when suddenly he hit her across the face. I instantly jolted towards them, jumping over and running inbetween these desks. While I'm running to help my mom, I see him hit her 2 more times. My mom was struggling, but looked so helpless while doing so. After the 3rd punch, He grabs her shirt to pull her to take her somewhere. She falls from the pain and lack of consciousness, so he starts dragging her.

At that time, I catch up to them and swing full force and deck him straight in the side of the head. I hit him a couple more times, and the exhaustion starts taking it's tole. After sprinting what felt like a mile, the adrenaline felt like it wasn't even pumping anymore. He came back after me and knocked me into one of the desks. I positioned myself so my back was towards him. He kept pounding in my back and in my head I was thinking "thank goodness I had 2 older brothers that beat me so bad my back is numb to pain". I grabbed a pen, turned around and stabbed him in the leg with it. This didn't phase him nearly as much as I thought it would. We exchanged a few more punches. I could feel the blood coming down the side of my face. He took his last swing and I ducked, ripped the pen out of his leg and swung around and stabbed him in the back with it. This time he looked like he could feel the pain. I kicked him over and gave him one last stare to make sure he wasn't getting back up. I went over to my mom and she was ok. I could still feel the strong pain of someone hitting my mom.

This is when I woke up. I woke up with so much anger.. All I could think was, why would I not have done more to that guy. I can't imagine letting someone have a full breath of air by the time I'm done with him.

But I'm curious out of all the dreams I've had, why do I remember the worst one? I'd rather be getting shot then someone hitting my mom.

What does the dream mean? If I was still so angry after I did "justice" to the guy. Is my dream showing me that revenge doesn't take the pain away? or how bad would the pain be if I didn't do what I did..