2. Do you mean Braille? Yes, large print can suffice sometimes... Audiobooks if your hearing is adequate.
3. Add some motor coordination problems and this is not happening.
4. It is boring for many.
5. Sure, with failing healthy and being less able to move. Not impossible, just not likely.
6. Too late for many things.
Most people forget that were talking 70 years old people or so. Some remain spry, but they are a minority.
6b. And what makes you think you will have better ideas then? Or have any actual energy?
By the time they're 60, most people attain at least one chronic health problem. If they're lucky, it's manageable for normal full energy life without such excesses.
Some fade much earlier than that.
Finally, the main problem is gradual loss of connections, friends, family etc.