Besides, most software packages have PC versions available. Apple is stable and gaining market share. You shouldn't base your purchasing decisions on stock prices, you should base them on the products. Public perception is that Apple has been unstable and in danger of folding. Plus, you can run PC software on Macs if desired.
Many companies develop software exclusively for PCs.
Also, many software packages are released for PCs long before they are released for Macs. Several different operating systems are available. This can be a considerable delay. More speed, superior software, and better color matching make Macs far better for desktop-publishing, web page design, video rendering, and other graphical applications. There are many games available for the Mac, and some developed specifically for the Mac.