The OP also asked about TSA Precheck- besides the germs issue.
Oddly I have rcvd Precheck status the last 5 out of 6 times I’ve flown domestic - my son who flew with me on one trip also recvd pre-check - never understood why but greatful not to have to kick off shoes or unload laptop. I assumed they had some type of profile on me and figured I was low risk - if it was random, I should buy a lottery ticket.
It’s not random- it’s a certain low risk profile. However, the one time you are about to miss a flight and don’t get it, you will wish you had paid the $80!
Middle aged CC moms = low risk profile
I schlepped my happy butt to the airport one Sunday morning to be interviewed for Global Entry and TSA Precheck, paid the fee, and now they give it to just any random person? So much for alleged security. The TSA Precheck lines can be just as long as the regular lines these days.
Not any random person. Mr. B started getting Pre when he hit 500k miles on Alaska and maintained his MVP Gold status for several years in a row. And only for the destinations where he flies more than 3 times a year and only on Alaska.
Global Entry does not have the “lottery.”
As far as line length, it is not the speed, it is all about convenience of not taking stuff out of your bag and not being undressed by friendly TSA folks. 
They have randomly given it for quite a while. Have heard they’ve cut back on randomly giving it, which spurred us to get global entry. We have no regrets and haven’t randomly been pulled out for extra screening.
So far, for us, the lines have generally been MUCH shorter in precheck and live leaving on shoes, leaving ziplock with liquid in bag and walking thru metal detector instead of full body scan or invasive patdown.
The lines at my home airport can be as much as 10 times longer without precheck.
Yes, lines in HNL, LAX, SFO, IAD and other airports we travel thru tend to be several times longer and slower in the “regular TSA” vs precheck.
It’s always a challenge to try and stay well. I echo what many have said about washing your hands, not touching your mouth. Lots of water and sleep, good wine for your health, of course!
If there’s any way to make it to first class, that helps immensely. Less people, less stress, hot towels. I always fly on the carrier that helps me maintain status, for upgrades, will pay a little extra, it’s worth it! I’m just to the point in my life where I don’t want to fly coach any more, it makes all the difference in the world. However, I don’t usually have to pay the difference, so that’s a big factor. But it’s the difference of misery or relaxation.