I mean, you'd be wrong, but I get it, if you're that dead set against it, nothing will change your mind. I used to work in the industy, brother still does at a high level so I was saying what you were much about key vs regular cards and we had a good hour discussion on the phone. The only hot points that got me partially on board with it was the design of the game, or in the case of the NS2 the lack of space on the available cards at the time, that was it.
Some games the engines ask for enough consistent data that the memory bottleneck coming off the switch 2 cards or blu ray discs are below a level where the game won't function right without a lot of restructuring, breaking up more areas with more loading moments, and so on. The NS2 has a slower card, notably than an optional express card, and that is still a bit slower than internal (and same can be said with the read disc time vs ssd on the other guys.) Those games, and with ones that don't fit on NS2 (like the 90GB FF7 Rebirth) you key card or have zero second hand resale rights with a rental/buy eshop button price.
But I look at the reality of it first before buying. If I see the game does NOT need it, and the developer is just being a nasty control freak playing DRM nonsense, or they're being just cheapskates and not paying for storage I either just outright won't buy it, or I'll wait for a hard up sale where the price sinks hard enough I don't care anymore. Like I'd love to get Pragmata but $60 for a key card...NOPE. If I see it second hand and it takes 6 months or 6 years and it's like $30 sure. I'm not going to encourage it, but not deny myself either.
