I think we are less safe. Bush's wars in Afghanistan and Iraq and unquestioning support for Israel have created more people who hate us than there were 6 years ago.
Basically we are dealing with guerilla warfare. History has shown that guerilla wars cannot be won through military means alone. The key is to "win the hearts and minds" of the population. Without a following, the leaders of Hamas and Hezbollah and Al Quaeda can do nothing. The reason they have power is because there are enough youths who are marginalized and hopeless enough to be willing to follow them.
So, to fight them: address the cause of the marginalization. Create justice. Understand the cause of the disaffectation and, if it is just, address it. Spend more money on social services to support the poor than the "terrorist" groups are. Cut the support from under them. If there are no disaffected youths there will be no suicide bombers.
Study the culture and language of your enemies. Figure out where their weak areas are and how to exploit those. Vietnam did this with their propaganda campaign during the war with great success. Know more about your enemy than s/he knows about you.
As for the leaders, instead of going after them with the big guns, treat them like international crime rings. Go after only the leaders instead of dropping cluster bombs on crowded city apartment buildings. Make intelligence the main priority. We haven't gotten Osama yet because we don't know where he is. We don't know where he is because the people in the area surrounding him don't like us and have no reason to tell us. If we actually cultivated better relationships with the rest of the word instead of telling them they are "for us or against us" we would have a better chance of capturing our enemies. Remember that we got Saddam because the owner of the house where he was staying informed on him, not because our soldiers found him.
Not that I'm holding my breath that any of this will happen. After all the agonizing about our defeat in the Vietnam war, we have apparently learned nothing and are repeating our mistakes.
And I hate to say it, but it seems that the only way to ensure your family's safety is to move to a small neutral country.