I spend a good amount of my time at work worrying about pressure. Specifically blood pressure. I can let pressure that's a bit too high slide for a bit there are usually more problems with pressure that's too low. I think it's the same for bike tires. Too high might decrease traction, but too low will make a bike feel like it's not tracking right. And, if it's too low and you run tubes, you've got a higher risk of getting pinch flats. Too low on a tubeless set up and you can "burp" more air out of the tire and break the seal at the rim/bead. There's a sweet spot for tire (and blood) pressure, and sudden loss of pressure isn't good in either situation.