I grew up on a farm with a few dairy cows, so it wasn't brand new to me like it was for you. However, we had particularly docile cows on my childhood farm, so I was not prepared for heifers that want to kick or refuse to be still so you can milk them. I took it personally too. I was offended, like they just didn't like me and didn't want to provide us with milk. I laugh about it today, though. It just took some time to work out the kinks.