Can someone here please define "professional" ?
Seriously.
I fully expect 10 different definitions.
I've been asking for this for quite a while. Everytime these threads come up and broad generalizations are made about "real pros" limited to a sub-set of a niche of certain "pros".
It's annoying really.
A Pro is someone who has a profession. End of story. That's what a professional is. His tools are the tools of a professional which he uses in his profession.
Built-in Ethernet ? I know many professionals who don't give a flying crap about it, an adapter is fine. I'm one of many professionals who prefers the MacBook Air over the MacBook "Pro". I don't need a 3 letter acronym on my laptop's bezel to remind me of my "status".
With USB 3.0 coming, we'll finally see USB->Ethernet adapters that can do gigabit speeds. Thunderbolt is a non-solution for Ethernet, ridiculously overpriced (because of active cabling and controllers).
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I work in IT support and the lack of an ethernet port would cause problems for a lot of people which in turn would mean a lot of lost sales. Some companies don't have wifi, some have older (i.e. slower) wifi routers and others block wifi access to their internal network.
I work in systems administration. My company has no wifi. I use my Macbook Air to work with, it being a Unix workstation, my servers being Unix.
Listening to some of you, there's no way I can get any work done because of lack of
built-in Ethernet. That can't be more far from the truth. Ethernet is still there, it's just not "built-in". Who gives a crap, the adapter works like a charm.
Reminds me of all the "But without an external COM port, how will I ever configure my IOS routers!" crying when those disappeared from laptops (non-Macs). Funny, I was still configuring PIXes without a
built-in COM port just fine. It's a wonder some people get any work done with that attitude.