Chicago CTA trains feel sketchy?

Just moved to Chicago and I've got to say that the CTA is really loud and shaky; kinda feels unsafe at times. I've been to alot of cities all over and taken the trains there (Atlanta, NY, San Fran, London, Hong Kong, etc) and I've got to say that Chicago definitely takes the cake for sketchiest ride. The best is Orlando airport terminal train, I love that thing.