Which is what
encryption is for.
Exactly. But I don't keep any data that's really worth stealing. A few songs, couple of movies, games. Perhaps the worst they could do is steal my cookies and get ahold of my forum accounts, but I never keep financial accounts saved in cookies, so there's little to be lost there, besides a post count.
If I was running a business from home, it'd be a whole different story. Regular backups, a seperate storage server, encryption, passwords, I wouldn't risk losing my income for the sake of being lazy. But as it stands, there's nothing that can't be replaced.
I'd be more worried about them stealing the hardware, but like I said, there's about 60lbs of metal in this thing, I'd like to see them try. I had trouble lifting it off the table onto my floor without dropping it, let alone carrying it out of the house.
My laptop is old and practically worthless. I think the components in it are dying, and I keep it in my bedroom, so if someone's gonna steal it, they would have stolen everything else anyway. I don't know why they'd ignore a £1800 monitor and desktop, £600 TV, £300 PS3 and £300 netbook just to go upstairs and steal my (originally £800, now worthless) dying laptop.
Not bothered about my mum getting on my PC. I've taught her well, she knows what she shouldn't mess with on a computer. Hell, she keeps her netbook more organized and clean than I do with my computers.