Whey Protein came from where the foam "skimmings" of milk and cheese production industry were found to have pure protein (without the fat of dairy).
Whey protein was then made a powdered drink for ill people in hospital who couldn't digest solid food.
The taste is cause its powdered freeze dried milk, which like freeze dried insant coffee, both taste like shit.
Some people are actually drinking Milkshakes from Shake bars (complete with with biscuit, fruit and chocolate) as it turned out Grenade style bars had as much sugar and dairy as milkshake.
Also if you adding dairy milk or chocolate to whey protein you're kind of defeating the purpose of it being a fat free health drink.
Me personally? I was eating eggs for breakfast, steak and grilled onions for brunch 10am and working out at 1pm. I'd drink a redbull for an energy boost. Pasta and tuna for post workout.
But I don't gymcel anymore as its pointless.