The main selling points for me are:
- No ads
- Improved Privacy
- Open Source
- Customisability (Plugins, Search Engines)
I'm quite content with the search results even though they're not quite on par with the quality that Google used to have.
SearX/SearXNG can also improve anonymity if you use a public instance, too. I choose to selfhost however, as the ultimate customization and ownership of the instance is more important to me than anonymity.
I find very interesting "indie" webpages frequently alongside my normal searches with Wiby results enabled. Wiby is actually fantastic.
In response to the sibling commenter mentioning its slowness: it takes some getting used to, but honestly waiting a couple seconds versus half a second for results isn't a big deal with the wealth of relevant information it gives. With about a half dozen engines enabled, I'm getting like 3-4 second response times, and that's on DigitalOcean's second lowest-tier VPS.