I refuse to have one
Work have been trying to give me a blackberry for ages now. I refuse to have one.
Or a hands free kit. I watch friends with Blackberries, and they work day and night.
No Thankyee. I head up the IT for a fairly small firm, and it hasn't caused the world or our business to end yet. Oddly this fantastic thing called an Answer phone was invented years ago, I also find most people are willing to wait up to 24 hours for an email reply.