"In my opinion, the 338-06 and 358 offer nothing over the 30-06 and 308."

Just another choice.

Different flavors never hurt a thing.

Anything other than a 12 gauge a .22 long rifle and a 30-06 could be argued to simply be reinventing the wheel.

Whatever floats your boat.

“If more of us valued food and cheer and song above hoarded gold, it would be a merrier world.” Tolkien