I would have a problem with that, because for a search engine to know me well enough to know what I actually want despite what I typed in it would have to know a lot of information about me I wouldn't trust the company behind it with.

I spend most of my browsing time in a browser configured to clear cookies, cache, and history on exit.

I'm not sure why most people are okay with companies gathering tons of data about them and trying to use it to manipulate them into buying products they don't actually want or need (among other uses), but I'm not one of them.

Now if I could only get a search engine to not ignore query terms because it thinks it knows what I want better than I do, I'd be even happier.

"I'm not sure why most people are okay with companies gathering tons of data about them and trying to use it to manipulate them into buying products they don't actually want or need (among other uses), but I'm not one of them."

It takes a ton of work to prevent it and it's more or less futile anyways. It's not so much that people are okay with this, rather it's a part of modern life and it's exhausting trying to mitigate it. And impulsively buying products due to ads is a personal failing.

Have you ever told someone to "just Google it?" Well, repeatable results are the underlying expectation broken by over-personalization.

Results are already different based on your location, so unless you're very near each other, you already don't have that. You mightn't notice it too much because it's only noticeable on queries where it might matter. Could be similar for personalization.