I cannot agree with this in any way.

No, the reason they get depressed is because when you’re retired, it is easy to feel like you have nothing to live for anymore, no purpose, nothing to get up for, no reason to even get dressed.

Only boring people get bored, I’ve found. And most people seem for whatever reason to base their entire lives around their careers, so when that ends – which it always will, and sooner than most people expect – that’s all they have.