Best thing I ever did in training was to stop using any whey protein or mass gainers and use the same amount of cash on good food instead.
Making my best gains now and as strong as ever.
The supplement industry has made people think their supplements are essential for building muscle, it's ingrained in people's minds from all advertising and all the interviews with the Pro's who need to find some excuse for having so much muscle and not using any drugs, plus they're paid to say they use as much as possible.
If a lie is told often enough, it becomes the truth.