I always have a cable lock with me on my bike just because it's light enough that I don't think about it. I only use it for quick trips into the grocery store but even then--and even here in the East side of the lake from Seattle where bike theft is low--I worry.
The problem: my other lock is a Kryptonite New York Fahgettaboudit U-Lock that weighs about 5 lbs. It's great protection but I just don't want to haul it around all the time.
I suppose I should buy a cheaper, lighter u-lock to use instead of the cable lock.
Tommy: I had the NY Chain that weighs something like 20 lbs. It's so unwieldy that I carried it once, and then I gave it away as a prize during NAHBS 2008 in Portland, OR.
Thanks for that info, Anon 7:10.
End Pavement - send me a note if you write that article and I'll link to it :-)
Meli: My wife is going up to the city in the morning for a conference and she's not bringing her bike specifically because theft is a problem there. It'll be BART to Powell St Station and then walk to the Marriot for her.