who is this "we"
Microsoft Security Essentials or Defender is quite okay, it
comes automagically with most Windows OS and offers scheduled
updates; of course if you are using Linux I wonder what is an
anti-virus software, and this brings in the strange question, why
does Android and / or iOS which are / is based on Linux still
offer anti-virus third-party products it's like a girl
that suggests a male condom that is meant for a male genital
to use on itself, sure it makes sense yet there are also some
Microsoft users that had three anti-virus solutions installed on
their Windows i.e. one OEM one that came with hardware vender, a
Microsoft out-of-box one, and a third-party one like Avast or
AVG.