No you shouldn't, and good for you! Just stand up for yourself and don't let anyone mess with you and get the best of you. I'm sure there's ways out there to prevent jerks from doing this without having to compromise your respect and manners. AND--believe it or not, there are more people in the world to associate with! You will be valued by someone you value..keep looking. On the otherhand, if there is something good about these people, notice it. Even if you choose to not hang out with them, your noticing the good, reinforces what's good in you.
can change their beahviour,can learn them things eg manners ect.
This is a very sensitve and political question and should not even be posted. Manners, correct manners as it were, are a result of culture and upbringing and can completely change outside of the context of the culture. So withing the culture if the manners are deemed appropriate and correct, then they are. Outside of the context of the relevant culture, this should not even be considered. As a respecful person, it is up to us to advise someone, or not(letting it go) if their "manners" are correct for the social culture that the person finds him or herself in. "As in Rome, do as the Romans do", and "Do unto others, as you would have them do unto you(the golden rule). My wifer and her kids are Philippino, and some eating customs are completely appropriate and correct in their culture, but would be considered rude here.
it is a completely new object.
good and respectful and bad somtimes
They have deteriorated, decomposed, lost respect, and fallen away.
It is not a physical change because rust is no longer iron, but is iron oxide, a completely different substance.
Good manners and proper behavior do not change with the number of people with whom you are interacting.
It is a chemical change because the products, H2 and HCl, are completely different from the reactants in their physical and chemical properties.
Table manners vary from culture to culture and change over time.
Oxygen is present at ground level. It doesn't completely change into ozone.
You can completely change your look by redoing your hair and buying a whole new range of clothing
It is a chemical change because table sugar is a pure substance that changed into completely different substances (caramel).