Respect your Elders

Why? Nobody knows. Just like many of those things, this has also been fed into our brains, from the moment we started understanding any language.
I'll respect somebody if I want to, I'll not respect somebody if I don't want to! 'I' will decide that!

MAYBE:
They want that kids should not argue with them, and don't question anything they say. (Most of the people would want this i think.) So, one generation started feeding this thing into their children, and it has been passed on since then.

'Don't argue with your elders' is another consequence. Kyu bhai? This is much more prevailing than that respect thing. And much more against how a kid would want to live. We depend on talking and discussing and arguing, and we just remove the possibility of arguing from our lives if it is being done with an older person!
(Although usually the older person will turn out to be right in  the argument :P experience you see )

Young do argue with older people, but in the end they have to shut their mouths (even if they are winning :D). Zabaan ladata hai.. badtameez!!

Lying is good sometimes

"Vo jhuth jisse kisi ko khushi mile, vo jhuth jhuth nahi hota".

Suppose you are a painter. You've painted something, and you show it to a friend of yours. You want appreciation of course. And the friend might see it on your face (or may be not, but he knows that you want it). And suppose the friend didn't like the painting. Then what would you want him to say? Just for your happiness, do you want that he should lie and say that the painting is lovely? I think you would want him to be honest and say whatever he feels. (And usually in such cases, friends are honest. They'll say whatever they feel.)

But there are situations when they'll lie. At first you'll like it, but slowly you'll feel that the friend is ever praising, never criticizes. Then it feels that he has been lying. He might be agreeing to whatever you say, or praising you for everything, just to keep a good equation with you or make you happy. Intentions might be not bad, but the method would not produce the desired results.

Suppose you are a fine actor. And you want to pursue it as a profession. Of course it depends on what others think about your acting. You ask somebody, am I good enough? The friend might think, he needs motivation, he wants to go, so I can lie and say yes. Even if he believes the opposite. I think it is something that nobody should do.

If you are such a friend, I don't think that doing it is a good idea. You don't tell the truth to somebody because the truth might hurt, or you lie to somebody because it might make him happy.
Slowly you'll lose trust. If you are doing it with me, I'll never know whether you really mean it or you are just lying once more.Your words might become meaningless to me. Trust lost => friendship lost.

Anger

When we are angry, we say the truth. Whatever it may be. But the problem lies in how we say it.
We are usually rude, and we realize afterwards that we didn't mean to say it that way.

When I am angry, I try to think more, and speak less. It helps, at least helps me.