Why do older men have such bad fashion sense that attend trade shows?

So in my line of work, I attend trade shows here and there. For the most part, most of these men have horrible fashion sense. For example, they go to the show all day long and wear the same clothing. It gets wrinkled over the course of the day and they look tired. Many of these men do not wear hair products like gel or pomade in their hair. So lets just say at the end of the day once the trade show ends, they look like they could use a shower and a fresh pair of clothing that is a little more fashionable to go out in. But what do these older men do? They leave right from the trade show and go out to eat in the same clothing they wore all day long.

On the other hand, the younger guys that work trade shows well they take the time to go back to their hotel and freshen up , change clothes into something more fashionable and then head out for the evening for cocktails and dinner.