When you say "100 units per week" do you mean 100 standard drinks per week? That's 14+ standard drinks a day. That's a LOT of alcohol. You will be very lucky to avoid liver damage, brain, and other health problems if you continue at this rate. See Wernike's Encephalopathy. Korsakoff Syndrome. Not pretty.
There are real benefits to be found in sobriety. I hope you get to experience them.