"Another" GreyBeard here...your question is one I hear a lot from younger shooters...sometimes phrased as 'Why do you stick to that OLD rifle, when newer models and chamberings have so much to offer?"
My centerfires are an early '60's Rem 700, and Winchester and Ruger bolt guns from the early '80's. I have three .22's that were new when I still had NO grey in my hair, and I own and cherish a couple of Mausers that are about as old or older than I am.
I am convinced that recent guns are just as good if not better shooters than my old pieces. But I doubt they'll hold up as long as my well-broken in veterans. There's something about an old gun, and what it is, is not that it's worn, but that it's worn IN. Smoothed up with thousands of cycles of the action. I've never shot a barrel out, although I know someone who has...my old guns just keep getting better...or maybe I'm just a better shooter...but I don't think I'd swap one of my old friends for something shiny and new that might not be as good, even if you could show me it was better. Sentiment enters into it, too.