My X had a HUGE cocaine problem. He was using all the time, erratic, cheated, lied and stole. It was bad. He lost his family. That is where he started. Now I believe he is in the I need to get my stuff together and keep this job and will only use on weekends or when not working. I believe he will crash and burn at some point...again. That is what drugs do.
It isn't healthy, legal and can lead to danger. No, it is not cool.