How common is cocaine in your circle?

Enjoyed it regularly enough in my 20s, realised I was doing it too much a good few years ago and havnt touched it since, I'm in my mid 30s, unfortunately it seems basically none of my circle stopped, to the point where lately im considering cutting some long standing friendships out entirely. People who literally are physically unable to have 2 or 3 quiet pints without putting a call in. Every single time. Deep shame as some of my pals would be going back to early childhood, I just can't watch them kill themselves anymore, it's gone from once a fortnight to maybe every 2 or 3 days for some of them. You know the type of 48 hour sesh in a dark room. Have tried to lend advice and just get aggressive defensive shite back.