Nope, I don't believe the world is getting worse. The world is now educated and informed, and healthy. All the things that make for a broken society are being eradicated... ignorance, pestilence, governmental coups etc. This all really only happens in Africa, but we're slowly beginning to help out. I think that living in 11th century europe is probably similar to parts of modern day Africa. The only thing that will really screw things up in the near future is overpopulation. I think many governments will probably have to deal with this by doing sterilizations, and offering incentives to not procreate.
Nobody's mentioned it yet, but if you search out the world geological survey, the incidence of earthquakes is actually lower now than it has been in the past. The Afghan and Iraq wars' bodycount has been much lower than the first and second world wars. I think people aren't so predisposed to be sucker-punched into supporting wars for their religion, or nationalsistc fervour, as opposed to say, 100 years ago. (the millions of church-going youth going to sign up to win the war with the 'Bosch' or 'Krauts', being cheered on by their families and peers, is thankfully a thing of the past).
There is growing sexual equality, religious tolerance, racial tolerance etc, which is down to education, and the growing moral zeitgeist from of all places - TV!
The bottom line is that if you got in a time machine and went back 200 years to live in the good old days, you'd probably be dead by the time you hit 40.