I've got two laptops, a six year old Acer with Windows 7 which I've used very little in the past at least three years and the Macbook air I converted to.
The Acer ran very well for the first three or so years of it's life when I was able to restrain from downloading a bunch of crap from the internet on it but I wanted to find good DVD playing software with screen capture capability and one thing led to another...anyway, it's had a few virus infections and has slowed down with age but for the most part it still runs well.
I'm unsure how old the Macbook is because it came from my mother's office and who knows how long it was there, but it became a better device for my purposes because it's faster, has clear, working media playback (Itunes, youtube etc) and is lighter to carry around. The battery life is also a lot better and what's really a benefit to me is that it's not used when the lid is closed, on the Acer it still was.
Unfortunately, for the past couple of days I've had multiple episodes of unresponsiveness with Chrome here on the Macbook and I'm a bit worried. How do I check for malware on a Mac?