As the Cambridge Analytica story continues to unfold, the movement to delete Facebook accounts is growing.
Facebook still has all the data of previous users. So the risk of a privacy breach is still a live issue. By deleting your account, you take a step forward in favour of your privacy.
Mark Zuckerberg said something to the effect of how governments need to come up with better privacy regulations so Facebook could improve its’ policies.
This would be like the CEO of Campbell’s Soup burning a tin full of soup on the stove despite reading the directions, then telling government they need to come up with a better way for Campbell’s to provide directions on their own products.