Seems to me there are two options.
1. Don't fly.
2. Trust the professionals who are undoubtedly more vigilant and trained than ever before, don't let the terrorist win. Go Fly.
Being a stubborn old fart, I would go for option 2. However, if on the day the aircraft captain's greeting sounds anything like "Ladies and gentlemen, this is Captain Bin Laden speaking" I would revert back to option 1, say I had forgotten important (like feeding the dog) and demand to get off.
ShyT
p.s. Sorry if this sounds flippant but I think it's important to keep a perspective on things otherwise these ba$tards have achieved their aim.