more or less a lot of the decisions of ports ultimately is because of durability. its why some people are wondering why the audio jack wasnt included and integrated into the FW16. the answer is that if it breaks, you can replace it easily. (despite how wasteful it sounds to use a port on audio)
Sounds like a smokers house. I've repaired some gnarly desktops from people who based on the inside of their computer A) smoked like a chimney and B) don't change their air filters.