Why do some AntiSpyware programs give the option to quarantine the malware. Why not just remove it?

Answer 1

Malware removal is somewhat of an inexact science. Mistakes can and do happen. False-positive detections happen more often then the anti-malware industry cares to admit. It's their dirty little secret.

Needed system files can be mistakenly flagged as malware. Quarantining allows a way to undo any incorrect file deletions, easily, if it ever becomes necessary.

A file in quarantine is totally safe. It can do no harm.

You should quarantine everything for a month or so, then if all is OK with your computer and all of your programs, then delete.

Answer 2

Quarantine is a safe zone, where the virus exists but it can't do harm to your computer.
These types of viruses can't be removed without damaging certain system files or no antidote to them is found yet.
Being in quarantine gets the virus inactive.

An deeper explanation of the term and what exactly does the quarantie can be found at
http://www.webopedia.com/TERM/Q/quarantine.html

Enjoy :-)

Answer 3

Because sometimes Anti-spyware programs make mistakes. The quarantine option lets you recover the mis-identified file.

Delete is final.

Answer 4

sometimes ur virus might download when the program is deleted from your computer.
If you mean healing when u say deleting, try AVG