On the other hand, in the 60's and 70's there were what were called sport-touring bikes. They were road bikes in the classic geometry with more-upright position and slacker head tube with more trail for greater stability aimed at the more enthusiast cyclist. There were also full-touring bikes that would take racks and panniers with long chain stays and slack head tube with lots of trail for loaded stability. This was before mountain bikes came on the scene. You could commute with a touring bike, putting only what panniers you needed to carry whatever stuff you wanted to carry. Many bikes were fit with lights as well. Of course, back then, it was either platform pedals, or toes clips and straps.
For anyone who got beat up on rough roads, going to a mountain bike was like riding a cadilac. This is why they became popular. They are a lot softer on the tush and all that weight, while slow to get going, has so much inertia it make the bike seem fast on the flats.
Now, I'm a road bike guy but I wanted a practical commuter bike, so mine has a rear rack and a rack trunk. Very practical. I went on a 47 regular ride yesterday. I threw in two apples and three pieces of raisin bread (home made). This is in addition to my identification, two spare tubes, patch kit, multi-tool, and tire irons. Oh, and I threw in a towel to wipe the sweat when I stopped for breaks.