sleaziest job,
I guess to some people, a pharma sales person is no better than a meth or crack dealer. Obviously there are drugs that you sell that do great things and cure many ills.
On the other hand, there is also a significant amount of people that are hooked on "legit" pharmaceuticals. Many people that use antidepressants and ADHD drugs do so for recreational purposes. The fact that you get the recreational drugs in a shiny office rather than a dark alley does not really make it better. The doctors that overprescibe and the pharma sales people that hype the products are therefore viewed as pushers.