Do you guys lie about marijuana use?

I was waiting over 2.5 months back on a security clearance background check where I was completely honest about my marijuana use. I told them I used to use it when it became legal in state, but won't use it anymore as I am working a federal job.

After waiting this entire time, they denied me, even though I haven't used it in a long time and wouldn't use it anymore. In hindsight, I should have just lied, as I would pass even a hair drug test.

Just wanted to rant a bit.