I agree that people will always need to carry on a small bag to bring medications, money, id, etc., but I think the carry-on issue was a disaster waiting to happen. In the overall scheme of things, if the airline happens to loose my luggage, it's not the end of the world. I will simply buy fresh undies and enough clothes to get me through 24 hours and deal with it. I would rather be safe, even if it means being inconvenienced. I realize that if someone really wants to do harm and is devious and sophisticated enough, it is possible that another tragedy similar to the one on Tuesday could happen again. But why make it any easier? So many people want to be able to carry on all kinds and sizes of luggage because they feel their time is more important than anyone else's and heaven forbid they should have to wait for their luggage. As far as I am concerned you can hand search me and/or my luggage, x-ray it, have a dog sniff it, or do whatever it takes, I just want to feel safe (or at least safer).
My other concern is that right now, everyone is willing to do whatever it takes to have a secured flight but will everyone still feel that way in a year? or two? I hope the flying public does not become complacent and then start complaining about how long it takes to check in, the stringent security checks, etc. I worked for a major airline and passengers consistently expected (and often planned) to be able to show up 10-15 minutes before departure time. We were pressured to be sure that passengers did not have to wait more than 10-15 minutes in line to check in, even at the busiest times. These demands were a result of passenger complaints. This tragedy has hopefully taught us something - just as freedom has a price, so does security.