Each AV user may have different views according to their needs or experience using them.
I have not used Antivirus or Antimalware for a long time ...until Now.
(Kaspersky, AVAst, McAfee, NoDIce, Malwarebytes..etc.) .. As well as Windows Defender - I always disable/turn off it.
reasons : - spend the pc memory
- slow down my pc activities.
- always annoying my activities.
- my PC is very old (1 GB RAM only!!)
I use it if I feel I need it....