Up until 2011 I used slides daily to document home life. I used a Canon A-1 with a date back, using X for the year since the thing was only supposed to be used until like, 89 or some such fixed number. It was fun. Once the date back became less fun, I switched to a regular date back and "once in a while" pictures instead of daily ones.
For me, 35mm slides represent history, especially family history. When my dad died, that's really all we had, a box full of slides, to remember him by, to examine his life and our family's life. I think of the ones I shoot the same way. Someday, when we're gone, maybe some kid will hold those little magical color slides up to a light and go "wow" just like I did. And that makes me smile.