Friendship of respect and sacrifice

Friendship, a stable 1 is not easily achieved.
Friendship once broken, is hard to regain.
Some just don't understand friendship...
Some don't understand it well enough...
For me I have the basics but not the advance.
But this is what my heart feels and what I want to write.

Ain't friends:
There to encourage and not discourage?
There to defend and not insult?
There to make their friends happier?
There to comfort when there's sadness?
There to share and listen?
The ones we go to when we have troubles?

Shouldn't friends be respectful to each other and not disrespecting their views? Their religion? Their believes?
Shouldn't friends accept each other?
Don't just think about yourself think about other's feeling... you may be having fun saying this and that but the other party may feel insulted.
Its not about open minded, its not about freedom of speech here, but its about friendship, respect and trust.
Sometimes I just don't understand friends who say really unappreciated things.
Are they saying it for fun? To win the argument? Or they just don't realize what they're saying are insulting?
I sometimes just want to shout to some friends who ask unanswerable questions by saying:" Do you really want to know? Or are you asking this so that you can win this conversation/argument?"
Think for yourselves.

Don't make your friends what you want them to be.
They are living their lives, so are you, and each individually.
No human has the right and authority to make a someone live a life as they see fit, what more a friend.
No matter smart, rich or powerful, there is still no authority.
If you see what they do is not right then tell them, and tell them in a way that a friend would do.

Now please appreciate and respect friends.
Don't live in a fantasy world as though you control the characters in it.

I feel that some of the close friends that I know are not the friends I really know; and sometimes the friends that I don't really know/not close with are the friends which you really need in times of trouble.
The closest friendship is forged not in time, but by the sacrifices we make.