So tell me how checking their IDs would have stopped them from blowing themselves up? It wouldn't! Why are YOU GUESSING that it would? It wouldn't. Atta had an ID. The 7/7 bombers had an ID. The Pan Am 101 bomber had an ID. The Palestinian bus bombers in Israel all had IDs. Having an ID and having it checked to be sure that you have an ID and nothing more, does NOTHING other than prove that you have an ID, valid or fake.
It's interesting that you can't come up with any reason that the mere possession of an ID does anything to increase security. Because it doesn't.
Show me where on this thread I said that checking an ID will result in stopping a terrorist act.
This is something you created out of your mind. I have written repeatedly that there appear here to be 2 schools of thought. Do Nothing, because it intrudes upon (sometimes perceived) rights of individuals, or do what we can that is reasonable on a case by case basis, ie there is a credible threat of a bomb on a bus and ID's are asked for and backpacks are checked, as part of dealing with the threat. etc. You've moved to far to the extreme on this. ID's are not the solution. They can be part of the solution. Tour the whitehouse, you will get the full treatment regardless of what you look like. Are you against this as well? What about a tour of a nuclear facility, transportation to a secured military installation or other facility. You are against it all? No ID's in any case imaginable by mankind?