Deleting accounts should remove past DM's as well.

I have sent things in the past that I am not proud of. 

It feels as if other people have more control over the messages that I sent than I do. As someone with anxiety, this is one of the things that worsens my anxiety and literally puts me on the verge of panic attacks. I want to delete my account but i'm too scared that others will have more control over the messages I have sent than I do.