Hi STARRIDER, welcome to the forum
Here is an answer to your question :
It's somewhat similar to Windows Defender and other antivirus/antispyware applications. It just doesn't conflict, so why disable it?
Last time we spoke to the engineers in Redmond, we were actually advised to not turn off the Windows firewall as it is also connected to some other Windows network stack features (e.g. IPSec). So that's what we do now, we leave it on.
Greetz, Red