I broke down and purchased a new 15" rmbp for the ungodly retail amount we all know and love. I know it is a lot of computer for the money. I also purchased Applecare which I do believe is a solid investment with a portable machine. So my question is how durable are these machines. Are they truly designed to withstand the day in a day out of portable use (plugging in and unplugging the ear phones, power plug unplugging, lid open and close use, general bumps and jostles, etc). I typically baby my electronic devices but needed some additional insight from the group on realistic expectations. Final note I am a bit dismayed that the earphone jack is now attached directly to the logic board. With average wear that could be a expensive fix.