I think that aside from the fact that schools don't have a lot of spare time to fit marking off a checkbox of 'life' activities, it doesn't account for individual interests and needs. I could no more convince my son to dress up like a pirate than I could get him to fly to the moon, but he's got to do plenty of other things that aren't on that list. I've never been in a cave (major claustrophobia!), but I have travelled all over the world.
I do see that there are a lot of children who aren't having the experiences that many of us would have had as children. At the school I've just left, I had children who had never been to a beach (despite living 10 minutes from one), a child (10 years old) who didn't know what a penguin was. I had children that came to me with very poor fine motor skills. A lot of children struggled with learning about money because they only ever saw their parents hand over a card, and had no idea about the value of money. And this sort of 'checklist' is an attempt to address those deficiencies.
I think that instead of making some arbitrary checklist, we need to see how we can incorporate more 'life' learning into schools whilst still addressing the curriculum. A previous school I was at had a big reserve next door and we got blanket permission from the parents to go there, so it was not unusual for lessons to be held sitting in the middle of the reserve (how many red flowers can you find, blue, yellow, etc. Graph the results). They had a big farm, so the children would track the egg production, weigh feed, track weather conditions. We also had weekly 'elective' sessions where children chose a different activity each term (such as cooking, various crafts, some sports, dance, theatre, etc) so that they could experience something different.