I think this speaks to which decade we are from.  There have been numerous reviews that Windows Defender that comes with Windows 10 is every bit as good as commercial internet security suites.

We came from a time when MS and Windows were not up to par when it comes to even basic antivirus protection.  So, we're all used to installing commercial internet security suites, antiviral software, and anti-malware protection.  But MS has apparently caught up, unbeknownst to many.  Having said that, I am a paranoid who relies on not just internet security suite but multiple antivirus products.

Here're the results of AV Test on various products:

https://www.av-test.org/en/antivirus/home-windows/

https://www.av-test.org/en/antivirus/business-windows-client/windows-10/october-2019/