Milk is definitely an amazing thing to drink as long as you don't have a lactose intolerance. If you do have a lactose intolerance I would recommend you stay far away from soy products as 98% of the soy grown is GMO and is owned by Monsanto. Soy is also extremely bad for you endocrine system as it is full of xenoestrogens, which mimic actual estrogen, which screws up your own hormonal balance. This can actually become a really big problem as you can develop things like gynecomastia (man boobs) with long term consumption of any soy products. This is only part of the reason why vegan and vegetarian lifestyles are terrible for your body.
The other point I'd like to make is that milk is a much healthier alternative to soda, alcohol, and even fruit juice. What a lot of people fail to realize is that our bodies are made up of proteins and fats, not carbohydrates. So fruit juices, although they may contain some vitamins, are extremely high in sugar, whether they're fresh squeezed or not. High sugar foods, like bread, pasta, rice, and especially fruits cause insulin spikes and wear out your pancreas, this is what eventually leads to type II diabetes. Yet another reason why vegan and vegetarian lifestyles are extremely unhealthy.
Our bodies are actually capable of making their own glucose (sugar) through a process known as ketogenesis, so we actually don't need to intake carbohydrates at all to survive. You could go your whole life without a single carb and actually be extremely healthy, the same cannot be said for going your whole life without protein or fat. This relates to milk because it's mostly protein and fat, which are essential nutrients for your body. Many people do not realize that your brain is the fattest organ in your body consisting of over 60% fat and that every nerve in your body is coated in cholesterol. Without cholesterol and fat in your diet, you would literally compromise your health and risk having mental health issues, neurological issues, or potential death.
Every cell in our bodies has a phospholipid bilayer that is also made up of fat and cholesterol. This bilayer is what allows the transfer of proteins and fats in and out of the cell, as well as protecting the cell from viruses and bacteria, so a lack of fat and cholesterol can actually compromise your immune system as well. The best meal you could have everyday would be 2 - 6 eggs with a big glass of milk. Very high in protein and fat, low in carbohydrates. Eggs and milk also have some of the highest quality and easily digestible protein available from any foods we eat or drink. This is why they've been considered "staple foods" for much of human history. So the more milk you drink, the healthier you will be, although I personally recommend drinking whole fat milk or fermented milk (kefir). Kefir has 10 - 20 probiotic strains as oppose to yoghurt's 6, making it an extremely healthy drink for your gut health as well. Look into it.
For anyone who wants to challenge or wants to disagree with what I've said, my mom developed type II diabetes from eating a high carb diet (mostly fruits). I personally see an endocrinologist on a regular basis who has educated me about many of these things. I bodybuild and drink 2 - 3 litres of Kefir and Organic Milk a day and my doctor always tells me I have some of the most impressive blood work he's ever seen and he wishes most his patients were like me because I actually understand proper nutrition. I also did 2 years of biochemistry at my local college. So I kind of know what I'm talking about. I also take in about 300 grams of fat a day, trying to get it up to 400 grams. 2% Milk only has 5 grams of fat for reference, so don't be afraid of the fat in milk, it's good for you!
