Viruses have been written for the Mac. There is no question. The problem that the virus has is in getting itself installed, which is (virtually) impossible without user consent. The Mac OS kernel is protected from unauthorized installation of software. The user must enter the administrator password before the kernel can be accessed.
I have been using Macs since 1993, most of the time with NO anti-virus software, and I have never had a problem. The only time I have ever used anti-virus on my mac is when I am networked to a PC, to prevent "spreading" an infection even though my Mac is immune.
Might I get a virus on my Mac someday? Maybe.
Will I have one within probably 20 minutes on an unprotected PC? Yes.
Macs are faster, more reliable, can do ANYTHING a windows machine can do (including run windows as it turns out), do NOT cost more money, have better warranties (that you generally don't need) and they look better. They also have fewer hardware compatibility issues.
Oh, the operating system is more intuitive and user friendly also.
Most people who "don't like Macs" haven't used one in 10 years.
Have you driven a Mac.... lately?
(I know, this has nothing to do with the forum or firearms. Close away.
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.