In cases like this, the parents have been putting up with it for years so nothing you are likely to say to your sibling will change anything. In a sense, the sibling is not "taking advantage" because the parents allow it. They, like most victims of abuse, are used to it and have decided it is easier to put up with it than pay the price for challenging it and changing the situation. This is very frustrating to you if you are the "good" sibling who never deliberately disrespects your parents, never takes advantage of them. It feels very unfair because the bad sib is getting everything and giving very little. But, believe me, there really is nothing you can do about it. Your parents could if they wanted to--but they, like most victims, have decided to accept what is basically unacceptable behavior. Decide that some things in life are wrong and unfair and unhealthy...but that you cannot change this. Take some satisfaction that you turned out better than your sib.
It depends upon what they are doing. I think every child takes advantage of their parents in one way or another at one time or another. Sometimes they don't realise they're doing it. However, if it is something that everyone but that sibling resents, I think a family meeting is in order. As far as the grandchildren being disrespectful, it's really up to the grandparents to draw their boundaries and talk to the children lovingly but firmly that they will not put up with that behaviour. Tough love is warranted sometimes.
i would talk to them about it in a calm matter not to start a fight but if they don't listen i would take two people with me and have an talk to them about it with concern. If they continue doing it i would give them the silent treatment and not even eat with them.
Yes. If they are behaving in a manner that I don't find appropriate I would probably even invest more time in our relationship. Seeing as how we were raised together, I would have great insight to their values and belief systems, and thus be better able to persuade them. I think if one of my siblings were acting out of line then I would try to be as good of an influence on them in the least annoying/judgemental way as possible.
Yes- and I have many times.
As an older sister you get a kind of respect and more like "on their level" than parents. So if I feel its needed I may tell them to behave and be respecting;p
I mind my business-it can get nasty