You are still you, your problems are still there, you are still bound to a slowly decaying body, there's no GAME OVER banner and credit roll proving that you have won the game of life. Because you haven't. Hah.
You can of course keep yourself entertained with all sorts of stupid stuff that doesn't actually matter. Or you can accept that there are still only a handful of things that bring people contentment, and you don't need to be financially independent to do any of them. I'm talking about bland obvious stuff like spending some time with loved ones (including pets and plants), going out for a walk in the park, etc. Unsurprisingly, a ton of retirees do just that. It's not because they are old and can't do anything else, it's because they have finally figured out what works.
And it's not like doing five times as much of that stuff is going to make you five times happier, either. Anybody with a full time job can carve out some quality time instead of arguing with strangers online.