We inherited some gilded Thomas porcelain. We did use it and the gilding has slowly been removed over many years but we still use it as a link to the past.
Mum's gilded crockery has suffered likewise.
The plain (ungilded) mirror finish cutlery I bought from John Lewis last year recommends hand washing to preserve the finish.
If you want this stuff continue looking
perfect, hand wash it.
Personally, I find the pristine, 'never been used' look unfriendly as users then fear marking things with 'fair wear and tear'.
At 60, I don't expect myself to have the hair/face/figure/teeth of a 16 year old...