Why are Macs more secure?

If I listed every single reason that the Mac OS X operating system is more secure than Microsoft Windows, then I'd be typing for a long time. Since it's late, I'll leave you with one reason.

When you're about to do something dangerous, or stupid, or significant, a Mac tends not to sit back and watch the fireworks. It will force you to enter your password first. (And if you're not at an administrator level or above, your Mac will halt your meddling.)

This achieves several objectives: primarily, it makes sure the user has permission to alter critical system settings and/or install new software. But it also indirectly educates the user, by indicating what settings are integral to the well-being of the machine. In contrast, read this article on microsoft.com about editing the guts of a Windows installation and observe how many times your password is required. (I count zero, but to their credit, there is an easy-to-miss warning about Registry Editor's capability to nuke your system.)

In general, if you're about to do something nasty to your PC, Windows will (at best) ask you, "Are you really sure you want to [fuck shit up]?" Most likely, you'll click "Yes", because "Yes" is a positive button, compared to that downer "No" button. "Are you sure you want to [turn your firewall off and let the world download your personal data]?" Yes, yes, yes!!! But when your Mac asks for your password, it makes you stop for a second and consider what you just clicked.