Now your not talking about replaceable parts but what you consider your ideal equipment which sound like old grandpa talking. In my days there was 8 track and dam it we liked it.
Optical is dead no one cares, Unless your gaming which still requires been online to play the game shows that optical disk are going to go away. I use a wifi DVD/Blu-ray disk for all my needs as well as 3 other Airs, and no one seems to mind or care any more at the house, first week it was "the world is ending" after the first week glazed over eyes when asked do you miss the built in DVD.
You're not able to differentiate between a core argument and a side note.