Title is pretty clear. My company does not pay for GSuite (Google services for businesses) but rather has a subscription to Office 365. Despite this, many of the younger folk such as myself prefer Google services  and have been using our personal accounts to store and share Sheets, Docs, and Slides.   
  
A few months ago I was transitioned from one team to another and haven't touched my old documents since. I just hit my 15GB free limit on Google Drive and, as someone who despises subscriptions, I refuse to pay for it when I have physical several hard drives at home. So I sorted by date and got rid of everything I haven't touched in a while. I sent them to the trash, then emptied the trash.
  
I come in today and my old colleagues are livid at me, apparently they have been using my documents and folder long after I left the team, including having added documents. This may explain why my space was used up so fast, but I digress.   
  
I apologized and felt bad, but I am hoping for some validation here because I am beating myself up over this. While I should have checked the documents a bit more closely, am I being an asshole here?