The counter culture of networking waves the SDN banner. That acronym seems to belong to them. They don't know what it stands for yet, but one thing they seem to be sure of is that nothing good can come by allowing networking innovations to evolve or even to exist in their birthplace.
The way I see evolving the network fabric is through improving on the best of the past. Every profession I know from medicine, finance, law, mathematics, physics, you name it -- all of them are building their tomorrow on a mountain of past knowledge and experience. So I'm sure my feeling the same about the network doesn't make me outdated, just maybe not a fashionable SDN hipster.
Some angry SDN hipsters say that the core network needs to be dumbed down. They must have had a "bad childhood," technically speaking. One too many Cisco 6500's stuffed with firewalls, load balancers and other things that didn't belong there. Maybe even a few with a computer or two crammed into them. I'm not sure I can feel sorry for you if that was your experience. Maybe you didn't realize that was a bad idea until it was too late. Maybe you were too naive and didn't know how to strike the right balance in your core network. Whatever it was, I can assure you that your experience isn't universal, and neither is your opinions about how tomorrow should or shouldn't be.
Those who couldn't figure out how to manage complexity yesterday won't be able to figure it out tomorrow. Tomorrow will come and soon become yesterday and they'll still be out there searching. Endlessly. Never realizing that the problem wasn't so much the network, it was them and the next big company that they put their trust in.
I had a great experience building great networks. I stayed away from companies that didn't give me what I needed to get the job done right. The network was a heck of a lot easier to manage than computers in my day, and the technology has kept pace in almost every aspect. You see Amazon and Google aren't the only ones that can build great infrastructure. And some of us don't need help from VMWare thank you.
So mister angry SDN hipster, do us all a favor and don't keep proposing to throw the baby out with the bath water. We know your pain and see your vision too, but ours might not be so narrow.