Wouldn't your life be better? How much did you spend on alcohol? Imagine you invested this money or started a business with it?
If you never had any alcohol you would have avoided many mistakes, work harder and more easily, you would be smarter, richer, more healthy and with better friends

I just read the question again and realized that you made some stupid arguments; Why would non-drinkers be smarter than drinkers?
And why would non-drinking friends be better friends than the drinking ones?
Alcohol kills your brain cells, makes you not study and focus, is bad for your health in general and can cause depression
Non-drinking friends will be more focus on their health, sport activities, studies and succeed in their professional fields than drinkers that are less reliable and less healthy
Alcohol actually doesn't kill brain cells, it's a myth. And sure, when you're drunk it can be pretty hard to focus, but it doesn't affect your ability to do so sober.
And honestly, the most reliable and ambiguous people I know all drink.
You would agree alcohol is not good for sanity and for the brain, it is bad for hundreds of other health related reasons and it impairs your judgment dramatically