To answer the title. (And ramble a bit because I am in Grad school for this kind of stuff)
Quite the contrary. Studies have shown that the majority of siblings do get along, and get along well. For example. A study done by the University of Nebraska found that 2/3 of people who were involved in the study reported that they considered their sibling/siblings one of their "best friends". Another study done by Purdue University showed that 60+% of people reported good to great relationships with their siblings.
Sibling relationships are a complex organism. Many variables influence how siblings interact with one another, and how the relationship pans out over the lifespan.
For example, sibling competition as it pertains to parental favoritism is shown to have an effect on sibling relationships. There is shown to be a correlation between overt and perceived parental favoritism towards one sibling over the other and how this reduces closeness among siblings.
Sibling competition is thought to be caused by many things, and depending on how the competition plays out can have an effect on the relationship. Sibling competition often occurs because the children are trying to define who they are as individuals and are trying to separate themselves from their siblings to show their own strengths and weaknesses. A sibling may not know positive ways to get attention and instead will pick a fight with the other sibling to try and obtain that attention. Sibling fighting and competition is shown in family's where fighting to solve conflict is considered normal and part of every day living.
Other influences are; birth order, age spacing, number of children, personality, developmental markers (such as who walks first, who gets adult teeth first, first girlfriend, who first gets laid, etc), individual social and cognitive skills.
There are shown to be many benefits from having a sibling, especially ones you get along with. Such as, increased social skills and a better understanding and ability as it pertains to efficient conflict resolution.
From my personal experience I have a younger brother. (2 years younger than me). Growing up id say till about I was 12 and he was 10, we did not get along very well. Alot of competition between us and in an unhealthy way. He was a soft, quiet, genius prodigy, and I was the rambunctious, social. hidden intellect kind of guy. Caused quite the clash. Seemingly out of nowhere we found a lot of common interests, in video games, movies, outdoor activities, and views on the world around us. We started working together, and spent a lot of time together. This almost overnight turned our toxic relationship into a best friend relationship. I love the little bastard
We still compete and rib on each other from time to time. (its a naturally brotherly thing) Ill give him shit for going bald, and he will bring up just how much more intelligent he is than me. (I myself take pride in my intelligence, but he is on a whole different level in that he finished his 4 year degree in only 3 years. All while maintaining a 4.0 gpa and working 40 hours a week. The kids an animal and I could not be more proud).
So when you are out and your brother cock blocks you or gives you shit. That is just him being your brother. (Granted when we go out I try and wing for my brother and try to hook him up with that ass, but his pride usually does not want my help). Go figure.....
If you want to change your relationship dynamic with your siblings from teasing and cock blocking to working together and bro-ing around you have to take an active approach. You do not have to work on changing your brother, but to try and find commonalities and ways that can bring you closer, as well as communicating how you feel, and what you expect when you are interacting with each other, or viewing how one another interacts around other people.
Lost my train of thought. Ill stop rambling.
If this was helpful or you have other questions to put me back on track feel free to respond below.
Tool.
