Do I need weekly full scan?

Hello Norton Community!

 

I have a question about idle full scan: do I really need to have weekly full scan to keep my PC secure?

If my PC is infected and a malware is active, then a daily quick scan should detect and disinfect it.

If my PC has inactive malware then Norton should detect infected file when I will run malware in a future.

 

What is a reason to keep this option "on"?