The point is that when more cores become mainstream more applications will start utilizing them. It also lowers the price gate to utilizing software and solutions that require a large number of cores for everyday people.
Read The Witcher series. While not the worst series I read or even bad, I do have to say that parts of the books that where not Geralt's or Ciri's POV were a slog to read through.
Not external, but should be good for backing things up. Only issue could be speed.
https://www.guru3d.com/news-story/western-digital-gold-hard-drives-are-back-and-get-more-reliable.html