I had my wireless open for several years. Like you mentioned, it was great to be hospitable to people who just needed a few minutes of wireless to save their tails. And I've had many times when a person's open wifi saved my tail.
That said, I just closed mine at my house. As a father, I got creeped out by a sick-o looking guy spending more than a few minutes in the back of his minivan. About 10 minutes into it, feeling ill, I rebooted the router, added a password, and watched him drive off.
I had my wireless open for several years. Like you mentioned, it was great to be hospitable to people who just needed a few minutes of wireless to save their tails. And I've had many times when a person's open wifi saved my tail.
That said, I just closed mine at my house. As a father, I got creeped out by a sick-o looking guy spending more than a few minutes in the back of his minivan. About 10 minutes into it, feeling ill, I rebooted the router, added a password, and watched him drive off.