^ I agree with most of what you've posted up, but anyone could accidently get a virus or infecttion through different means.
If you just so happen to get a new part for your pc and use the disk from the manufacturers.
Sometimes they may some viruses on it by accident when not paying attention to their tech lab and what they burn into the dvd disc.
Malwarebytes is quite good yes, but remember it won't be able to bring down the most toughest virus-malware infections you'll see soon later on.
This belongs to a old friend and partner of mine on another forum he use to visit.
http://www.spyware-asylum.com/
http://www.makeuseof.com/tag/types-computer-viruses-watch/
Very informative and detailed and begins to talk about infections that will rootkit itself deep inside your pc making it hard to get rid of without bad consequences to come afterwords.
http://www.makeuseof.com/tag/types-computer-viruses-watch/
These here are sample of what you people may face if you ever get infected with something you put on your pc or by some other means.
The ones toughest I have dealt with was the retro-virus in 2010, but this one had a very nasty malware program directed at windows xp-7 os and was meant to completely strip the of\s of all security and protections.
Not even a regular antirus will do at times. :\
There are a "few poeple" on here that I know can avoid being infected. and they wouldn't have to blink twice without touching it or looking in that direction.