Did I do the right thing (left alcoholic husband)?

I've been married for nine years, and we have two small children (6, 3). Things were going great for a long time up until about a year ago. My husband has always done drugs and drank alcohol moderately, however he's begun to do them more frequently. He'll smoke a blunt then drink an entire six pack of beer. Or he'll take something more powerful while chugging down a bottle of vodka.It's gotten really bad because he becomes "moody" during these episodes. He begins to trip out, become paranoia or he becomes enraged. I've let it slide because whenever I bring up concerns to him or others, they tell me to lighten up.A few days ago, while driving, my husband took some marijuana and drank seven cans of booze. After a car got in front of him, which he took as cutting him off, he began to aggressively tailgate. I and the children were in the car. I begged him to stop and then he started to speed up and ran the red light at an intersection. We all screamed in horror.It scared me so much that I packed our stuff up, and I left with the kids. I'm staying at a Extended Stay. He hasn't called to check on us or apologize. He thinks he's done nothing wrong. When I talk to our friends about it, they think I'm overreacting. They also smoke marijuana and drink a lot, so they think I'm just being a killjoy.That moment in the car scared me so much. I think my husband is out of control. But am I overreacting? Maybe I am, though I worry for my childrens' safety. via /r/Parenting http://ift.tt/2a0sYL2