They shouldnt crack under normal use. The key word is "normal". I realize there's no point buying applecare. My screen broke. I had told an agent on applecare on the phone the day it happened, but couldnt tend to it bc of my circumstances. The agent said he would make a note and not to worry. i was able to taake time to get it fixed bc i couldnt even notice it, but my friend made me realize it was apparent. I dont have 20/20 vision and i never would have remembered. finally, I went to apple on 14th st in manhattan and was told the crack came from an impact and was accidental damage. I told the genius it was not impacted or damaged by anyone. Thats how i bought it and there should actually be two notes in their system that this was discussed previously. The day before i went to apple, i was assured this wasnt a big deal.. the genius was, aside from rude, didnt give a fair argument. he said he wasnt saying i did it, but he was also saying he didnt know how it happened. So, I was left with a $610 bill. he told me to call amex since they cover this! I'm pretty much through buying apples.
I also had an issue in regards to my cord fraying on my late 2010 macair. I know as a fact I never did anything other than use that computer for possibly 1 hour a week. I know the cords are fragile. This was my second replacement. But since this fray was in the middle if the cord, i was told it had to have been damaged by me. Impossible. I have a wire organizer box. this has the cords loosely placed and not kinked or wrapped wrong.
I had enough.