Hamburgers shouldn't be 100% beef. They should contain egg, oatmeal, and some yummy spices. LOL I like homemade burgers...
Basically, the US food that doesn't come from organic farms that you know pretty well is crap. Most processed food, aside from containing the usual crap of hormones, antibiotics, etc. will also contain chemicals to make it look better, stay around longer, and have a different consistency (along with a healthy dose of insects).
The bombardment of hormones in milk and meat products have been linked by many doctors to a host of feminine problems including early menarche and hormonal imbalance (anyone wonder about why everyone seems to have problems with fertility nowadays?).
There is an easy answer- buy organic from locally trusted resources. There are CSAs and grassfed, free range ranches. You'll get better tasting, fresher food and know that you're not killing yourself by eating. And you'll know that some local family that takes care of the environment is making a decent living, and you're not contributing to the gas shortage by trucking in your raspberries in the off-season from some far-off place.
Of course, people have to actually cook... And no fast food...
I wish I'd switched over a long time ago. I ate all that crap and developed allergies to a lot of it along with other problems. It's now all good organic stuff for me. Tastes better anyway.