Just wait till your UEFI OS has a problem that won't let you into the BIOS. UEFI fixes a security problem that could exist the same as many security fixes, I have been using the World Wide Web since the early dial-up terminal days when you put the phone receiver into the cradle. I have had no security breaches but have seen logs of attempts. I did fight virus infections before and after McAfee most of which could be traced back to computer labs at colleges or Kinkos type public access PCs so it was not from the outside. I do remember Web servers getting attacked mostly Apache where everything was left as default and the server was outside a firewall.
I use the tools that are readily available and stay away from sites that are known to be suspect. I do have an isolated machine that I can use for 'testing' if I think the warnings I get are overzealous, like the AVG warning I get for the patcher I use to get the Real solitaire and other games that were stolen without warning by the Win 8 upgrade to run.
Remember when MS started the campaign to impress us by not allowing our printer to work that we had been using for three years when XP came out? I like many others turned off or turned down the security settings so just what was the point. The computer shops loved all the calls they got, but people still got infected by fake virus warnings popups and sexy e-mail attachments both avoidable if AV software was installed.