I've already decided I am not leaving anything to a particular liberal niece (I have no kids). She loves things the way they are? Let HER figure out how to support her family in California in 10-15 years.
I see your point, and you are justified in your decision. If she always has it on easy street, she will always be a liberal. You might be doing her a favor. I have three boys, so don't have the issue. I love all my nieces and nephews, but have dozens of them, so it would take a large inheritance to make a dent in their lives. As far as I know, they are all conservatives. Even the few democrats in my family are opposed to Obama and find him disgusting. As long as he is president, they won't vote for any democrat.