I disagree, me being an advanced PC user, I've never encountered any issues with Windows, thats because I took the necessary precautions, the vast majority of people are not aware how to avoid viruses/spyware/malware, or even how to remove and deal with them..
I don't think its fair for you to say purchasing a Windows machine is not a intelligent choice, now I assume your like the vast majority of users who aren't very computer savvy and do experience crashes, viruses etc, but do not know how to deal with them..
What I find hilarious is that people often blame Windows, but fact of the matter is, its the users that cause all these issues, when you do a clean install of Windows, you'll find that it performs perfectly, but over the months and years you see performance degradation, do you think that happens on its own? no way, its because of the user..
Conclusion is if you know what your doing with regards to computers then you will have little or no issues with Windows..
And again I'm no fanboy, I actually prefer Mac OSX over Windows any day, infact I don't even use Windows anymore, unless I game.. so I'm not here taking sides, I'm just shedding light on the truth of the matter, you cannot blame Windows for the ignorance of the users..