I guess it goes to show that there are so many degrees and approaches to this cool hobby of ours. Myself, I like every facet: I like to hike in short distances and spend most of the day lounging and swimming and eating....and I also like to start out with a 13lb pack and do miles and miles. And everything in between. I had never heard of anyone seriously being upset about leaving a "spice kit" behind, and to be honest with you, the very terms "spice kit" make me chuckle, especially when it's considered a necessary piece of gear, like water treatment, sleeping system, shelter, spice kit.
Oh well, to each their own. Personally, I don't think my back can handle more than 4 or 5 miles with 40 lbs, and I'm only 34. Then again, I don't think I've ever even hefted a 40 lb pack....but then again, I don't stay out for more than a few days.
Always something new to try.