But your rec room is your business alone. Shunning PreCheck hurts everyone.
TSA intended PreCheck for the tens of millions of people who don't need extra screening. When those people are in one line (that moves at maximum speed) the regular line also gets substantially shorter. Without PreCheck, you're just making the slow line longer, more onerous. Think of PreCheck as your good deed for safe flying and speedy airport entry, even if you rarely fly.
Why don't more people sign up?
The only thing Americans adore more than kvetching is making excuses for why they can't change their situations. For PreCheck, these excuses include: the time it takes, its cost, the weeks-long approval process, and paranoia over registering with a federal agency. Pretty much all of them are bullshit.
Don't wanna shell out the $85? PreCheck is good for FIVE YEARS. That's $17 a year. Even if you fly just once a year that's less than you'll spend on dinner for two at the in-terminal Wendy's.
Don't have time to go do the interview? C'mon. A trip to the airport to interview might take you half a day. If that's four hours, and it saves you having to wait on two two-hour TSA lines, you've now made that time back. If you live in Chicago or New York and the airports are all-day excursions, then just schedule your interview for the next time you're flying back home from somewhere.