There is nothing wrong with this. It is your Warrior archetype showing up.
We all lean most into one of the 4 archetypes naturally. Or have an interest in another archetype depending on our age and/ situation. Among these 4 are King, Warrior, Magician and Lover archetypes.
The King is the leader. People like the president, godfather, emperor, dictator, etc embody this archetype.
The Warrior is the fighter. People like the revolutionary, soldier, henchmen, martial artist, criminal, etc are among this group.
The Magician is the thinker. People like the dreamer, teacher, researcher, alchemist, programmer, writer, nerd, etc are all magicians.
The Lover is the feeler. People like the seducer, poet, stalker, empath, healer, simp are all part of this.
And yes, all archetypes have their negatives and positives.
I notice that there are certain stages of our life when we men are fascinated by fighting. Usually in our youth or at an age when we realize how much strength in the body gives strength to the mind.
In a world that is safe, there is still part of us that recognize danger and wants to be prepared to overcome it.
If thoughts of fighting continue to follow you, your mind is nudging you to train. If am not mistaken, you are already taking martial arts class or in the process of doing so. It’s a good inspiration to hone your werrior spirit. And also learn to discipline it.
Like a wise man said,
“You should be a monster. An absolute monster. And then you should learn how to control it.”
—Jordan B. Peterson