Personally it’s because there’s no ads. Google’s UX is to choke the user half to death with cookies, popups, reminders to use their app, login screens, and banner ads. And that’s before we even get to the content, which is padded with SEO and filler, dancing around the point before finally giving an answer written by who-knows-whom.

(And yes I feel justified in calling these SEO sites part of Google’s UX because this is exactly the behavior their algorithm and business model are encouraging.)