Rant #1 - Greeting Card Envelopes

Why the heck do they make greeting cards in every conceivable size so that only one unique envelope can go with that card? Once they are separated both useless, and they aren't even attached when you buy them. Even if they came in hundreds of sizes there is no number or standard code for greeting card envelopes like there is for business envelopes so they can't be purchased separately even if you wanted to. It would even make sense if the cards were cheap but you had to pay extra for the envelope that fit it. Why not just make the %^&* cards and envelopes in standard sizes? Meanwhile, here I sit with a stack of nice cards and a stack of useless envelopes.