How's your family?

I was thinking the other day about what causes our families to go through major changes. I have come up with the following:
-kids going off to college
-kids getting married
-kids having kids
-divorce
-moving
-having kids
-getting married
-death
I am wondering more and more about what my own reaction should be to my family's major changes. The very nature of a change suggests instability. I happen to like stability. Not necessarily order and regimen, but definitely stability.
During a major family change, I do not want to be defined as the family stabilizer (which I sometimes feel is my default role, as the oldest of 4 children). I have been told that it's a role that will stick with me for the rest of my life. I am a mediator. I dislike confrontation. I sincerely want everybody to stop their bickering and get along. Right now, that's the one thing I can't have. And so, I have to deal with it. How? I haven't decided quite yet.