No, I dislike duplicates in general. I only want one of each card, with the sole exception of those overlapping in multiple collection goals (e.g. the English Red’s Pikachu FA cards are in both my Pikachu and FA Supporter/CHR collections; the English Team Aqua’s Kyogre EX FA is in both my Seviper (cameo) and FA Supporter/CHR collections; etc.)
Having said that, I do enjoy duplicated artworks with different versions of the same card on the same binder pages, which is why I enjoy collecting all languages and every minor variation. The Base Pikachu artwork alone has more than 100 different versions of cards (110 rn, to be exact).
All 15k+ duplicated cards I have are in a box one of four boxes, waiting to be one day sold.
Greetz,
Quuador