I have medical issues and have problems with not eating enough calories on a regular basis due to lack of hunger and nausea. Forcing myself to eat more food makes me sick to the point where I'm completely miserable and will skip food later or I will actually vomit it up.
The cream I get is raw, grass fed/pastured, and local... the same as my milk.
Having the whole milk and cream in my coffee is as good as it gets for me as 'breakfast'. I can't chew or it causes me to have worse nausea. I've tried some whey protein in there too... but it tastes weird and makes the nausea worse as well.
Sometimes I also use coconut milk... with the white separated, lightly sweetened, and whipped to get calories as well.
But for me the coconut milk will not be added to coffee, or drunk by itself... as I think it tastes pretty gross on it's own.
If I don't do these things I tend to chronically under eat because I simply cannot eat a normal volume of food most days, and when I do eat I usually want a good amount of vegetables which lowers the amount of fat, and I don't always want very fatty meats.
I found that under eating was actually causing me to stall and not lose weight in addition to making me very tired. Adding the easily consumable calories from cream, and sometimes whipped coconut fat has actually helped me a lot.
I don't do it every single day. But I can tell when I've been eating too low and it's time to add the liquid fat in to give me a boost. The BEST thing about the cream is that it takes so little to help get my calories up to a suitable level. The small volume is key for me, while still being palatable. I can't eat pure butter or coconut oil off a spoon like some around here do... it also makes me feel more nauseous.
So, there can be reasons for other people to consume products that you don't find optimum for yourself...