After 46 years on the air, I have shoeboxes filled with QSL cards. While I cherish every QSO, I do not request cards unless it is a new band country. I do not use the QSL Bureau.
If you need a card from me, I would be delighted to return one to you 100%. BUT, please QSL ONLY DIRECT and include an SASE if in the US, or SAE along with one greenstamp if outside the US. That is the method I use when requesting a QSL card.