Agreed.
I'm too heavily invested in the 300WINMAG to ever give it up. 40+ years. I will continue to shoot it. It's an exceptional cartridge. If I were to just be getting into 30 caliber magnums (or just rifles in general) I'd never get involved with a belted case.
I now have a 30 Nosler and it can duplicate the performance without the belt crap. I really wanted to get a little more velocity than the 300WM but with the 210 VLD, faster was less accurate for whatever reason. I have several thousand 210 VLD's...
I also have a 300RUM, a bit of a different beast. No belt.
Still, I LOVE to shoot my 300WINMAGS!!