Positive change is harder to see
Humans are wired to see negative change because we need to protect ourselves; a negative change is seen as a risk and a danger. Positive change is much more difficult to see; there's no risk involved.
Think about it this way: When there's a negative change with your data (e.g., a board member's email address is incorrect), it is a problem, everyone knows about it, and often we rush to fix it. When there's a positive change (e.g., all the board members' email addresses have been updated and are now 100% accurate), we rarely notice, and it's even more rare that we say anything about it.
This is why I recommend that data managers practice database public relations. Because positive change is much more difficult to see than negative change, we have to make a proactive effort to highlight all the positive change going on around us.