Why are so many people careless drivers?

ok so i was in the car with my dad driving to khols to pick up some clothes. i live in nj and we were driving on the garden state parkway. someone merged without warning right in front of my dad and stopped short. i almost went flying bc he slammed too hard on the brakes. then later when we were going home another car went around my dad and he went bumper to bumper almost and then again stopped short (different person btw). but i mean, are all highways this bad? i mean twice in one day for gosh sake and this happened many times before on the parkway.why are ppl this careless?

Why are so many people careless drivers?
Because people are idiots. They rush everywhere and think "okay, I might hurt myself but whats the big deal", some people can admit being carless may involve them to become hurt but very few carless drives admit that they might hurt someone other then themselves
Reply:becuase people feel they gotta rush around. but when they get them selves or someone else killed hope they feel good about them selves. and working is not a reason just a lame excuse. also manuevers like that are considered wreckless driving. with fairly hefty fines in most states.
Reply:they do work
Reply:You can deal with them by driving defensively, and you must.
Reply:NJ....what else is there to say?
Reply:Cell Phones, More people = More distractions, more construction = more traffic jams, Dense population = Less time to react...
Reply:Why are they careless livers? Lack of consciousness, perhaps.