The first is that time served translates into quality of work. Doing something for a long time doesn't mean you are automatically good at it. There are plenty of people that do things their entire life and are terrible at it until the day they die or retire. The other side is the assumption that someone who is new or only a few years into a profession can't be extremely talented because "they haven't been there."
The second is that there is a guaranteed reward for just living and showing up. This isn't a right or a perk. Tons of people work their whole lives and lose their pension in the end. Others brag about how they never took a sick day and all they get is exhaustion and a "perfect attendance award" that isn't worth the paper it's printed on. Politicians, for example, can serve for decades but never get to lead a commission of have a viable chance at becoming president.
You don't have to live within these parameters. If you are good, you are good. Take what you want. You don't have to wait.