Quoted from o-din:My 10 year old Mac Mini is still working just fine for what I need it for.
Never had to spend a dime on antivirus software or repairs....
Pretty much the same thing with the majority of PC users. Both sides can claim superiority by pointing to the anomalies of the other side but for most people - shit just works.
Anymore - the worst and most costly hacks tend to be on the Linux side. There are definitely down sides to being "open sourced"... the hackers have just as much access to the source code.