This really is something I don't get. I have a pretty busy digital and real life, and I really can't think of having more than a couple of CC (one Credit, one debt), an EC Karte and maybe a couple of cards for gym membership and (in this very moment) H&M giftcard.
Even Apple Pay strikes me as a solution looking for a problem. Maybe that's a fundamental difference between the U.S. and Europe, but I really don't get the gist of all this "scrape the huge heap of card crowding your wallet" excitement.
After reading this thread I'm starting to think European companies use plastic far less than American ones. All I can say is live here for a year and you'll understand.