They make money off you personal data why would they delete their money? Have you ever try to delete your account on something you use on the regular? I had to lie to amazon and tell them my email address was hacked for them to delete my amazon account but they still keep all that data. With vultr a vps provider I had to do the same thing to get my account deleted. This isn't just a facebook issue this is a massive issue where data is worth more then gold.