I spent the first 18 years of my life drinking huge amounts of Alta-Dena Dairy raw mik and never got sick from it...don’t know if they’re still around but their milk tasted great, always delivered in the mornings to our door.
Ed
Then you have been lucky. Other people have become deathly ill after consuming raw milk for the first time. The laws of probability predict that both extreme outcomes (never getting ill, and dying after the first time one consumes raw milk) will happen at a low rate; for the vast majority of people consuming raw milk, the chance of becoming ill is more or less proportional to the amount of milk consumed.
To put probability into perspective: coins have a 50% chance of falling head side up. But it is not impossible to shake up 20 coins in a cup, dump them on the table, and they all fall head side up.
When I was a kid, my mother went through a phase where she had read of the supposed wonder-qualities of raw milk, and started buying it for a few months. That phase ended when she was drinking a glass of milk and found a dead fly in it. Thank goodness--even if raw milk were safe, the taste of it is something that definitely takes getting used to. (I didn't care for it.)