I have been a Windows user for probably all my life, but started using Mac a few years ago. While I never required to use an external mouse with my Mac earlier on, I did find the need for one when I started using the Mac for longer periods.

I am primarily a Windows 7 user and prefer usually multiple monitors while at work. However, I also work with a Mac Book Pro. While I usually never used the MBP in a multi-monitor setup, I have started doing it now.