All the phones are handed-over to us with this blocking option activated but 50% of us make them root, You know why ? We just want to access the powerful features and make customizations according to our needs. It is also harmful but beneficial more than its cons. We can delete stock apps we can block malware and adware by doing this. However we shoul'nt allow unknown sources but it dependes upon the %age of benefit than the risk.
Thanks for Commenting. @Blockgators.