(1) You're getting on a 6am flight, so you're going through security at 5am and haven't had a cup of coffee yet because the TSA won't allow you to carry one. So you're just in a "haze."
(2) You have small children or are accompanying a person who can't take care of their own stuff for some reason, so you're juggling a huge number of bins and bags and trying not to forget anything, while also trying not to hold up the line.
For (1), you realize you should be at the airport around 2 hours ahead of the flight (domestic) or 3 hours ahead (international) to make time. If you need a coffee to be awake, you make sure you get one before reaching the airport. Yes, it this means a 6AM flight has you waking up at 2AM or so so you can get your coffee, shower, check out, taxi, etc and make it to the airport at 4AM. If you can't do it, book a later flight. International flights would basically mean midnight wakeup.
For (2), you hold up the line. No matter what they say, you take your time getting y ourself sorted. Now, you move to the end of the ramp and onto the tables if you can, but you sort yourself out and make sure all those bins are empty before putting them back.
Which brings me to my #1 pet peeve. Why don't they have longer ramps both before and after security? A lot of the places, you have to be the next in line for the scanner before you can pick up a tote and start unpacking your laptop and tablet and all the other stuff, which holds up the line. Let 4-5 people in line get their totes and start getting themselves sorted out so by the time they reach the head of the line they're all ready.
Likewise, have long ramps so lots of people can pack themselves up after scanning. What holds up the security line is not the scanning, it's all the preparation you have to do. So let people do it while they wait in line rather than force a mad scramble. Hell, the line would probably move faster too.