I wholeheartedly disagree and I might add that this is bullshit. Do whatever the hell you want to do with your twenties. If your idea of a perfect life is a flawless career, then go for it. Go where your interests take you. As long as you get bread on the table and don't bury yourself in debt, there is no reason why you should feel you are wasting some grandiose opportunity. Life isn't only about work and money.