Welcome! There are so many wonderful people here who truly know what you are experiencing. Both my daughters had drug and/or alcohol addictions. My oldest is actively working recovery and things are very positive, but regretably I lost my little one to the disease this past summer. I can understand the pain you are feeling..it must be very difficult to be the only non-addict in your home.
I too have found peace coming here, attending Naranon every week and working a 12 step program. Despite the pain and sadness, I have found something precious that I have never before experienced. Please keep reading and posting. Hugs and prayers