The biggest advantages to modern gear, in my less than humble opinion, are the increased level of safety and proficiency, and the fact that it can extend the number of years you can physically do this work. Modern climbing innovations and techniques can at least let you enjoy the ride well into your sixties... you'll have to slow down and do less of it, but you can move into other areas of the business, or into a management role. Or maybe just do it once in awhile so you can enjoy the view and feel alive. But, you probably won't have to look for a new line of work when you're 45 because you've worn out your body to the point where you no longer feel you can do it, or there's no joy in doing it. This is probably the best time in history to be climbing... any kind of climbing... because there's been so much progress made in the last decade.
There's nothing wrong with shiny, new things. I'm practically a museum piece... but when the Smithsonian has me stuffed and mounted, they'll have all kinds of shiny bling to use as props.