I put Malwarebytes on my computer. It's a full version but a trial version. It monitors in real time, all the time. I've run AVG and Windows Defender on the computer and never had any problems.
I ran Malwarebytes and it found nothing on the computer when I installed it. I ran it a couple more times in the next few days, it never found anything.
Then I booted into safe mode and ran Malwarebytes and it found 1 piece of malware.
So, why should I buy Malwarebytes for it's ability catch malware and for its ability to preform a scan at startup to remove malware it doesn't stop malware and doesn't find it when operating the computer normally?
It only found it when I booted into safe mode. Not something I am want to do on a regular basis and not something most people do or even know how to do.