Just an FYI-I saw a few 'will' topics and just thought I would share what my lawyer told me ( in case someone does not know this). If you want to 'exclude' a child from your will you should actually include them but only give a insignificant amount, like $100.00. That way it is clear that you do not want them to have a portion of the bulk of the estate. By not mentioning them at all, it can be contested that you forgot to include them (the senile accusation), or it was a clerical error.
That's very interesting to me - I'm considering leaving my estate to medical research and something to my niece and nephews. Thank you for the info. I'll be sure to leave a "something" to my son.