Ok, let's agree that these benefits which mentioned in OP isn't excuse or reason to drink. You easy can find many foods and drinks which is more beneficial for your health.
But on the other hand, I hate when abstinent people are looking into these who drink glass of wine or bottle of beer like into worst kind of alcochol addicts. Like there is just white and black and nothing in between. In some countries alcochol is part of culture. In Italy or Spain it's normal to have glass of wine together with lunch, but somehow these countries don't have problems with alcochol addiction.
I don't have much knowledge about these other points the OP mentioned but if they are true drinking responsibly once in a while is not a bad idea. But the problem with alcohol is that you will always want to get high on this substance. It would have been better to drink a few glasses but each time, you are tempted to drink one or two bottles. In some cases you see people drinking heavily regularly which could destroy thier financial, family and health.
Don't agree with you. Everything depends on personality, not everyone want to get high on this substance. If you want to get high, then it's already first sign of addiction. Personally, I drink beer not because I want to get drunk. I like taste of it, I eat some snacks or chips with it, trying different beers from all over the world. To get drunk like a skunk I would have to drink huge number of bottles at once.
Though, I must admit that I had some problems with strong drinks like whiskey or vodka. I just didn't felt when it's time to stop. And when next day I hhad terrible hangover and thoughts "never again". And that "never again" lasted only few weeks or months until next time. Fortunately, it's already in past.