Persuasive Writing

I am learning to write my opinion and add reasons.
03.03.17
It is wrong to fight.
I think it is wrong to fight. 
Firstly I think it is wrong to fight because people will get hurt. 
Secondly people get scream at other people. 
Another reason is people will scream at each other.  
Lastly people will smash stuff. 
So I think it is wrong to fight.