Why do alerts auto delete when the are inactive? I have no history them like I do announcements?

Edit: It appears this is intended behavior. Please see my last reply to the topic.

Since the feature was introduced. I was always puzzled why they evaporate knowing they expired or I manually inactivate them, when I return they are gone. 

 

 

So in my other  post I had taken the screen shot at 3:18pm and that showed it still active but not viewed, I made in inactive a few minutes later and seen it pink like it does. Came back in this morning and there were no Alerts. (nobody else has access to alerts)

 

A colleague of mine says he has the same behavior as you report, that once inactive they are removed the next day, so this does appear to be working as intended. (It's likely my site needs until tomorrow some time to run the task which removes the one I previously showed in my screenshots.)

I've retitled the topic and left it as a suggestion for a future version; that either they do not automatically get removed, or it be a choice for the site admin.