Consequently, using an antivirus on Mac isn't as ridiculous an idea as it used to be. Naturally, the larger crowd attracts more attacks targeted at them. Nowadays, there's a lot more Mac users than there used to be.
macOS was considered a much safer OS and that created a unique selling proposition against Windows, whose users seemed plagued with viruses on their Windows PCs. If ten years ago you would have asked what's the best antivirus for Mac, this would brand you as someone who doesn't know anything about computers.