But sometimes it isn't worth my time. If I'm being asked something about what I'm working on, fair enough. If I'm being asked what a command-line switch for curl does (and that's not related to what I'm doing) the total cost is less to look at the docs, rather then asking me to look at the docs.

Not weighing my time and effort into the equation is rude on behalf of the asker.

Nobody said you must answer any and all questions sent your way or that everyone is allowed to dismiss the value of your time. We’re veering away from the original discussion here.