User blog comment:DaNASCAT/Technical Update: October 14, 2014/@comment-35.11.22.175-20141018233100/@comment-14310002-20141019000855

Hi, while authors can not delete blogs ATM, you can still replace all the content with Template:Delete. Once an Admin sees that, they can delete it. I am not quite sure why blogs can't be deleted by creators, but it's  a good idea! :D