Are you: Jewish? Trans? Gay? A woman? Pregnant? Black? Brown? A furry? Muslim? Christian? Rich? Poor?
Need I go on? All these groups have at one time or another (including now) needed to hide. This is a forum full of techies, and I'm sure lots of people don't want to tell everyone they are a techie right away (remember when you'd get punched if you wore Google Glasses?), or talk about their income.
If you aren't willing to openly publish your bank statements and browser history, you got something to hide. Friends, family, government, foreign governments, big tech, church, whatever. You probably got something to hide.
We just got to stop equating hiding things with doing something nefarious. I don't shut the door when I poop because I'm hiding illegal activities, I just want privacy.
Even if you think that you have nothing specific to hide, identity fruad can be a signifiant risk factor.