Just another way for the government to make money, under the guise making you safe.
I have travelled with pre-check privileges because I was traveling with someone that has it, but I have never signed up. Don't have to take jacket off, no shoes off, no laptop off, in exchange of a subscription service for all intents and purposes. And BTW, how did they clear me? I was only traveling with someone that has it.
The whole thing is just a scheme to collect more money from the sheep. No, you are not safe because of it, just like you are not safer because of the "TSA theater" that they put together at the airport. The whole apparatus is set up to catch the average joe who forgot the pocket knife in their carry on, not actual terrorists.
Any terrorist organization with mediocre planning will be able to place a bomb on a plane.