Anyway, even if it was as extinct as lightsabers and such, what’s to stop Kylo Ren from considering bringing it back? If he already has a lightsaber, why not a clone army?
I was operating under the assumption that people don’t stop doing things without reason. They clearly stopped making lightsabers because blasters were simply more effective, albeit less elegant (from the available evidence, I have to agree with Han on that score). They stopped cloning for less clear reasons, but there was a war over it, and it’s safe to assume that the clones were on the losing side because none are around by Star Wars, so maybe the clones just didn’t live up to their military potential. In my mind, clones and lightsabers both represent the technological dead ends of the distant past, long since surpassed, with nothing but their nostalgic glow keeping them worth talking about–and that’s at the beginning of Star Wars, let alone three films later.
And yes, Luke can take out a whole sail barge full of blaster-wielding opponents with his lightsaber. But I doubt a lightsaber in the hands of a non-Jedi would be very effective (your three foot range will eventually bite you), and I suspect a Jedi who gave up lightsabers and set his mind to mastering the blaster would be formidable, if considerably less cool-looking. And how many spaceships were outfitted with lightsabers vs blasters? Blasters won the day, long ago. Lightsabers only get points for style.