For all the people complaining about inconsistency: Whether or not you have to take your stuff out of the bag depends on what kind of scanner they have. The newer scanners can detect whatever they need to detect through your bag. The old ones can't. Quite a few airports (Stansted, Geneva, Barcelona) are in the process of changing over and so have a mix of both types of scanner. (In each case I now know which way to go to get the new ones!)
There is no inconsistency about the size of liquids at the moment. The newer scanners were meant to be able to look at liquids up to 2 litres, but after a lot of testing, it was discovered that they can't yet do that reliably. So everywhere (in the US and EU, at least) is back to 100ml. We've survived that since 2006, I think we can survive a couple more years. If it does go back up to 2 litres for the new scanners tomorrow, that will be more "inconsistency", but what's worse, 100ml for everyone or 2l for some and 100ml for the rest, if it's clearly signposted?
Also, being as gentle as I can, I think it might also perhaps be an idea for those of us who take commercial flights to slightly dial back our sense of entitlement, just a smidge. The airline industry gives us the opportunity to be transported to another country in remarkably safe conditions, for not much more than the price of a meal out. You can surely put up with a few minutes of faff for that.
It is not difficult to make an explosion big enough to bring down a plane (the chemicals needed are astonishingly common) and we would almost certainly have lost several planes both in summer 2006 and since without the restrictions on liquids. The technology needed to save us from that, plus the logistics involved in making those scanners work while getting 50,000 or more passengers per day through them, is extraordinarily complex. And if there were to be one fatal incident, there would be utter mayhem in the media (and the airports).
And yes, it sometimes seems unnecessary because you aren't planning to blow up the plane. But it's a bit like saying that you don't think your child needs to have a polio vaccine because "When did you ever hear of anyone round here getting polio?". It's called the prevention paradox, and it's a real problem for policymakers because many people have short memories (or are too young to remember what used to happen). See also "Covid lockdowns were unnecessary because the NHS didn't collapse".
So, please feel free to check out the hijacking and plane crash statistics for the 1970s, as well as the real-terms price of tickets back then, and then just follow the damn rules at the airport. 🙏