Why insist on putting your eye behind the viewfinder to call yourself a PRO ? At the end of the day, it's the pictures that wow. Not what posture you are in when taking the photo that makes you good. I'm sure a photographer that practice yoga and bend in awkward position better. hahahahaha
I think Live view is a good feature introduced, but not something to rely on. Use it when you feel the need to. Don't just use it becoz it's better or what. It is not better or worse, just another way to frame your composition. That's all!!!! If you give me a cable extending out to another screen, and I need it, I will use it. I don't care if it's PRO or not.
I have quite a few instances I feel I'm glad I had Live View. I am shooting the NDP 2008, and I didn't reach the venue on time, so I'm in the crowd. I crank my tripod all the way up, even taller than I am (1.83m) and way above the heads of the crowd and shoot. Without LV, how am I going to frame !? Another case, I am trying to shoot at an angle that I need to slot the camera into a small confine area. I can see the LV, but cannot see thru the view finder. There it goes frame and click.
So... at the end of the day, each has its own pro and cons. Too much Live View heat up the sensor and may result in noiser pics, so use sparingly, at least that's the technology for now.
Move with the times.... adapt and take better pictures with what technology can offer you. Fall back to the old school approach when such features are not available. Make the best of what is offered to you. Be versatile. Don't lock yourself in your mind. Open it up and embrace.
That's how I feel. My alot of 2 cents worth of opinions.