Why are we fighting over small and stupid things?

Because it feels easier to focus on small, close-to-home problems, than the serious bigger issues. When you have an insercurity for example, this can be hard to admit to oneself. If you are in a relationship, you might take your own insecurity, and blindly say to yourself that the other person is doing something wrong to make you feel bad. This is some sort of coping-mechanism I suppose.

This is a very difficult question to answer without knowing more about your situation, if you have been dating for awhile then it could be because you are starting to phase out of the honeymoon phase. If it is a new relationship, some times it can take some time to come to terms with you and your partners differences.

Because it is human nature to fight over small things. We tend to fight to get ourself proved right, even if it is pointless. Sometimes it is so small but it might go wrong. When someone you care about hurts you, you can hold on to anger, resentment and thoughts of revenge — or embrace forgiveness and move forward. Fighting over small things isn't wrong or pointless.But if you don't practice forgiveness, you might be the one who pays most dearly. By embracing forgiveness, you can also embrace peace, hope, gratitude and joy. Consider how forgiveness can lead you down the path of physical, emotional and spiritual well-being. We all have small fights and argues with our parents, friends, partner and all but we should just forget them and move forward in life. :)

Small and stupid things are just that. Small and stupid. The conflict is not about them. They are just the outlet. Like a repressed anger, that looks for every opportunity to explode, on anyone, at anytime. The conflict between you keeps accumulating, and you dont compensate with honesty and openness and patience and understanding. Plus, there are some natural conflicts that can only be healed with distance. I mean pure energy conflicts, unsolvable (or at least not easily solvable). When distance, periodic distance, periodic pause, is needed. Like night after a day. Any healthy relationship needs periodic pauses if it is to survive. Its a requirement. But, If theres enough distance between you two, either natural conflicts are too big, or theres a lack of open communication and honesty and trust. All in all, all you can really to is to invest in honesty and open communication, patience, and listening capability. Then, hope for the best.

Biologically as humans we want to be dominant, arguing builds up dominance within groups of friends or family.

Because we are humans. This is our nature, That is how our brains are wired. You know what? I don't like it either. I am sick of this fighting over petty and insignificant stuff. But, what can we do? All we can do on a personal level is try and reduce fights in our personal life as much as possible and i hope that one day we would stop fighting .

Because those small and stupid things can actually give a great impact on your life. Everything matters.

It's always the little things that bother us more than the big things. So it can cause it to spiral

because they aren't small and stupid things to you. it's okay to fight. sometimes you just need a breather :)

Sometimes if you skip over bigger issues, the little things stand out and are more likely to cause issues. Address any elephants in the room and sort out key issues in the relationship and the fights over small and stupid things will sure dissolve quickly.