I'm not saying that normal school lunches are all that great - but atleast the tacos are made with meat that day and placed on a tortilla for the kids to eat then not filled with so much preservatives to expand shelf life.
The bags we're discussing here are for people that need a place to stow the normal items of work life — a laptop, your lunch, an extra sweater, some files, a water bottle, your iPad, and the like — while biking.