Increasing Apple market share

With Apple’s grasp on consumer computing reaching 10% worldwide, and as high as 20% in the United States, the question must be asked: 

Will OS X remain untouched by general malware and viruses, or will this growing user base draw negative attention from hackers? 

I am torn on this whole subject. On one hand, I would love to see the platform I love skyrocket to Microsoft’s widespread sort of success, however, I feel that I will miss being part of a smaller and focused creative community of Mac users. That a niche will have been lost and the OS might head in – dare I say – slightly more conventional directions.