yeah I don't think people realize how quickly proper milk spoils, it's not necessarily a bad thing. My granddad's ranch out in the mountains had a neighbouring family who also owned a cow and I had some of her milk back in the day, it was weird, not in a bad way, but it definitely taste like it would go bad quickly (if that makes sense haha). But they do also give people more options in terms of their dietary preferences, so ofc there's 1%, 2%, skim, etc. Homogenized milk is put under pressure and [some of] the fat is suspended from it. So yep, less fat.