White Zinfandel

My Grandparent only drinks this White Zinfandel that comes in a box and a bag inside the box, I drank a cup of it and it was so disgusting, like drinking bleach. I turned 21 a few days ago and thought I would see what the fuss was about since he drinks it 3 days in a row every week.

My only question: why??

It made me feel kinda dizzy and just gross like how I feel after taking Benadryl which is lame. I thought people were supposed to feel good or something

Is this what people drink for? Or did I just try the wrong thing? I know NOTHING about alcohol at ALL so I may be sounding insane here