If I had mod points I would mod you up.
My phone contract expires in about 8 weeks. With a contract renewal I will get a new phone. I have a bunch of criteria that I have around what I need but being 1mm thinner than the previous model isn't on my list. With Apple having issues with bending phones with the last release I would be tempted to think that unless they make the whole phone bendable a thinner phone will simply mean a fragile phone.
Removing the audio jack is design wank. A bunch of "creative types" has decided that they want a thinner, sleeker phone and that it would be cool not to have the audio jack. Marketing thinks it's great because they get to sell lots of Beats by Dr Dre headphones at vastly inflated prices. Customer think it's a con because they have wired headsets and are still smarting from having to replace their expensive Bose speakers because of the Lighting Connector. Change for the sake of change.