I hear this type of point being made all the time, but the reality is that there are many reasons to maintain proper cyberhygiene even if you do not think that you have anything to hide. In fact, because of how many times I have heard claims to the effect of the above, I dedicated an entire article to explaining the matter in detail. Please read the aptly named piece: Stop Saying You Don’t Need To Worry About Privacy and CyberSecurity Because You Don’t Have Anything To Hide. You Have Plenty.