why people like to drink wine beer   

The simple answer? Because it's illegal just to sell pure alcohol

But seriously, the best way to learn about wine is to try some. Like all things, some of it is fantastic, some of it is vile, and the rest is very much a matter of personal taste. If you've not had any before, start out trying sweet whites -- the tartness of dry whites and the tannins in reds take some getting used to.