While society is racing towards the future at break-neck speed, there is something to be said for knowing how to do things "the old fashioned way". Yes you can buy cheese at the local deli but have you ever made it yourself? Or made jelly? Hunted for your afternoon meal and turned the slain animal into a nice stew?
These days people can exist with very few actual skills. You don't need to know how to fix your car or plumbing, many people have never gone fully off-grid into the wilderness and lived there for days or weeks on end, even being without their cell phone for an hour would send many people into fits without an always-on connection to the world at large.
If you get the opportunity (or if you can make the opportunity), by all means, experiment with doing things the old fashioned way. Not only is this an interesting, informative way to spend your time, but in the event of something that sends our society back to the dark ages (a war, a massive power outage, a pandemic), you will be prepared for just about anything.
Some things to look into: gardening and canning your own produce, camping, bush craft skills, baking your own bread, fishing, making an item you always buy at the store (ketchup, mayonnaise, etc), knit or sew an outfit, make soap, build something (start with a simple bookshelf and move on from there)...the list of things you can do is pretty long.