Well, I'm not quite in your age bracket, but I've been drinking milk my whole life (guys in trucks used to deliver it to the house - those were the days). Mom started me out on skim until a cousin came to visit and she had bought, because he had requested, whole milk for him. I got a taste of that and haven't been back to watered down milk since. And my bones are doing quite well. Of course the milk we had back then didn't have all the growth hormones and other stuff milk has today.
Until I was about 10 we had a milk cow. We drank milk instead of water because we had so much milk mother had to throw it out. Then she started making butter & cottage cheese. I don't remember her ever making yogurt.
I am a huge yogurt fan now, plain low fat. I eat it almost every morning. I get a bone scan every 2 years & the doctor always writes "WOW!" on the report he sends. I think at some point he will quit ordering that test for me.