I can't imagine retirement.
I'm 25, about to FINALLY get my bachelor's degree, and I have no clue what I'm even going to do for a long-term career, much less IF I'll be able to retire, not to mention what I'd do AFTER retiring.
But there are some things I'd like to do more of if I had more free time and money:
Resume practicing on my trombone.
Resume practicing piano.
Finish my two novels and my comic book, and get them published.
Finish my video game narrative, find a programming whiz, and get the game into production.
Read my Complete Works of Shakespeare front-to-back.
Buy a TONLOAD of books.
Move into a house of our own.
Go shooting with my father-in-law at an outdoor gun range.
Spend more time with my nieces and nephews (several of which are dangerously intelligent, and well-behaved...when their parents aren't around).
Share my recipe for bacon-habanero-cheese-pizza with the world.