should we fight with our friends?

It depends upon the situation. If you argue with your friends for the smallest reason imaginable, then your friendship is not going anywhere. But arguments which happen because each one fights for what they believe in and happens just once in a while is healthy, I think. Because you get to know your friend better. I think it's healthy because you get to be comfortable with your friend that much that you are able to express your opinion and belief even though you know that they may not agree with it. And it becomes more healthier still when you two get to be really matured about it and accept the fact that people do not think and feel the same. It's nice when you get to accept each other's differences and still be able to work out and strengthen your friendship and keep the respect for each other intact.

well.sometimes...so that it can help you strengthen ur friendship

If we fights or argue with friends with reasons, its just fine but if we argue with no valid reasons, why? Are you a war freak, making an arguments without reason? It is not good to argue with friends but listened to what is all about the arguments and sit down to talk about it. After all you are friends.

is it advisable? of course not! unless you wanted to make clear of your differences with regards to the topic concerned. you may be arguing because you don't agree with the same idea. but that doesn't mean that one should compromises one's belief. sometimes, light fighting (or just for fun) is normal within friends. it "lightens" pressure among one another.