"If you could retire from work right now while retaining the same income for the rest of your life, what would you spend your time doing?"
Personally I could see myself doing several things:
I would start buying used camera gear, verify it to be working and set up a camera library, where members could learn how to use cameras and borrow them for their own projects, it would require a membership fee, but nowhere near the cost of actually buying a proper camera and lens. After a while I could see the library expanding and setting up a studio for simple but professional video productions, and so on.
Another option would be to start traveling Europe and take photos of cool stuff, maybe write an online journal or so, exploring modern history and other cool stuff.
A third option would be to start building suitcase model railways.
Anyone saying that they would just stay at home watching TV or gaming are idiots, you need a goal to work towards, else you can just check into a care home facility and ignore the rest of the world.
I just need two more drives to start running my home server, over time I will also need to add another SATA controller card so I can add two 2TB SSDs for caching and appliances