Welcome Wacky!
You're definitely not alone..... lots of smart and wonderful people develop an addiction to alcohol. All the things you mentioned are pretty standard for us: progressive use, lack of interest in life, solitary drinking, depression and anxiety, not being able to stop...... and the list goes on.....
It took getting sober for me to see how sick I was, and this forum has been my lifeline. Keep reading and posting - you deserve a better life.....