I read the GP's comment as referring to 55+-year-old "older execs"—Boomers, basically—and late-20s to mid-40s "younger employees". Those are the ones with families.

I can see a certain subset of recent college grads and young techbro-types who would want to be in the office so they can hang out with each other, but it's definitely the boomer and older gen-X crowd who believe that it's only "real work" if it's done sitting in a cubicle where your boss can loom over your shoulder any time he wants.