Agreed. I also tend towards Save All The Things, because Future Me (or my kids/grandkids!) might feel differently. I'd prefer to err on the side of having too many pictures, than only having a few. We can always cull them later, but it's hard to bring back what has been discarded.

If you have someone in your life who likes to do genealogy research, talk to them. You might also find that you would have been Very Interested in seeing what your grandparents did in their spare time, hear how they spoke, and so forth.

30 years from now, my kids will (I hope) be starting their own families, and I'd like their kids to be able to have insight into what their parents were like as kids, or what I and my wife are like as parents.