I used to think similar too until my parents gave me an USB stick stuffed with random photos from my youth taken ~20 years ago that they downloaded from the family PC after I moved out.
I am 100% sure I won't look at those again for at least another couple of years, but there is so many fond memories there I have made a few copies and plan to 'maintain' those indefinitely.
Tip: Decline when they first prompt you about choosing luggage options. They will ask again later in the booking flow, and it will be cheaper. I only ever book cabin luggage with Ryanair and it worked every single time so far.