Whey protein sometimes gets a bad reputation in the ancestral health world. Some avoid it entirely because it comes from dairy or because it's a "processed supplement," and not "real food." Many people assume it's just all about building muscle and nothing else. A meathead supplement.
Part of building muscle is about looking good and lifting heavy things, yes, but I consider muscle to be the most important component of healthy aging. A strong grip, a quick gait, a preponderance of lean mass—these are all predictors of not just longevity but also vitality. The more muscle you have, the stronger you are and the better you'll age. Whey certainly helps build muscle, and that's not a bad thing at all.
Whey is also a potent immunomodulator. It boosts glutathione status, the most noteable antioxidant in the body. Overall, whey isolate can make a person more robust—stronger body, stronger immune system, stronger detoxification system.
I firmly hold that anyone older than 55 should be taking whey protein, simply to get extra protein (we older folks aren’t as efficient with protein and need extra) and to boost glutathione, which tends to lower with age.
Anyway, I’ve got a great deal for you folks. Buy a bottle of Primal Fuel Whey Protein and get a free bottle of probiotics. It's a great opportunity to give your immune function much needed support as winter winds down. 
