I understand that websites use ad revenue to offset the costs of hosting and maintaining the sites,but unless they can guarantee malware free ads, my ad block software (ublock origin as stated above now) is staying on...
Exactly. A lot of people think adblockers are selfish, and people just don't want to deal with unobtrusive ads... but it's also because ads are constantly spreading malware. It's a safety issue.
Places like INGO can't necessarily prevent their ad system from spreading malware, it just happens.