It's different for every family isn't it? Mine don't use the necessary family business except for funerals. They could stretch a point much more if they wanted to but I think they choose not to because they still want to punish me.
From what I read some of the guys on here have family that go above and beyond the WTS rules because they are naturally people who hold a grudge.
I do agree with Simon that there is a certain amount of choice here and some families seem to inflict pain because that's the way they have decided to be in their lives.