I'm going to say this one:
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That's right, the keys were actually weird rectangular buttons you had to essentially push straight down, and which you couldn't touch-type on.
The 4A was a bit better.
Jeez, the 4A was BETTER?! Oo
I should have appreciated the improved 4/a keyboard more as a kid! The TI joysticks made up for it.
The bottom of the flare of the base of the joystick wasn't low enough to stay below the surface of the joystick housing, somehow exactly the right size to nick the side of the housing, and sharp. Since the base was only like 3" wide, the meat by the base of the thumb of your off hand (holding the joystick base) would inevitably come within hole-punch distance in the heat of Parsec or Miner 2049'er battle and then your brother would win and you'd have to sulk off and tend your literal wounds.
Anyway, keyboards. Whatever that ubiquitous $5 Dell brick that Dell tossed in for free with every computer or monitor or whatever whether you wanted it or not until like 5 years ago. I'm pretty sure they used those things as shipping box filler. My employer had heaps of those things hoarded away. I'd have one destroyed, unusable, in a couple of months. The keycaps ran on these tubular sockets that would gall, and before you know it the keys you used most would bind halfway down. I hated those keyboards, so I didn't let that stop me, keep pushing through the creeeeaaak and they'd CRACK down sounding like you'd just split the entire keyboard. Which was cathartic, until realizing that nothing broke, which was the second most disappointing thing about that keyboard, the first being the endless supply of identical replacements.
It's totally correct that membrane, or otherwise keyless keyboards are undeniably more awful on a one-on-one comparison. Pretty much the (in)tangible embodiment of malevolent design intent. However... Imagine Gauntlet. Ye olde video game Gauntlet. I fought those Dell bricks like an unstoppable wave of Gauntlet skeletons granted the ability to shoot the food. An insanely terrible, legitimately useless keyboard would have been refreshing, like a nice boss battle. Skeletons are the worst.