Why do people want to bring other person down when no one is perfect?

People tend to feel like they add more power to their own lives when making others feel weaker. They do know no one is perfect and probably know that even when they treat you badly. But they will continue pushing you if you show that you care. It is the most basic way of behaving, like you were in nature and your only options are survive or die. I would say you need to demand more for yourself and show your sensitive points only to people that deserve to know you for real.

Some people are often uncomfortable with themselves and feel the need to drag other people down with to make them feel better about themselves.

Some people do it to cover for their own poor self esteem. Some are personality disordered and do it because of wounds to their pride or other such reasons.

Often, people do this because they want to feel better about themselves. It's not a good way to go about it. Instead of bringing themselves up, they focus on bringing other people down so that they feel better in comparison. It's the easier thing to do, but certainly not the right choice.

Some people feel the need to bring others down , because they feel down themselves. They think, that because they are not good enough, they should make others feel as bad as they do.

People like to bring others down due to them feeling insecure about their own selves. They take their insecurities out on other people and bring them down in order to make themselves feel better.

they feel insecure about themselfes, so they try to bring a person down so they can feel good about themselfes and make the other person feel horrible.

I wish I had an easy answer for you. I think it's really great that you recognize that no one is perfect and that is something that not everyone is aware of. Some people really try to hold themselves and others to this imaginary standard of "perfect" that really isn't attainable for anyone. As you can imagine that is really frustrating for them to not be able to achieve that, which can lead to anger and confusion. It sounds like someone could be taking that anger out on you, which you do not deserve to have happen to you.

I have faced this at every stage in my life... Starting with my sibling, relatives, friends, and coworkers... For what I felt this far and understood was that I was being a thread/problem towards their own ego or rational judgement. People attack when they can not justify something within themselves. This can be because of jealousy which is a symptom from their boosted egos! I also think sometimes, that it might be because of the raw natural competing animal tendency that comes out in a more civilized manner! That's why I feel it is important to spread positive, unity and for an wholesome human society!

They are not learned person. They does not have sense of humanity. They are just envying these peoples.