We winterize in West TN and wouldn't consider not doing so. For $2.98 a gallon x 2, it's just not worth chancing it. Normally, in the fall, we've had colder temps than this year and used a couple of ceramic heaters and opened the cabinet doors. This year, fall was quite warm and never dropped below 32 degrees until the past 2 nights. We winterized the new TT 2 weeks ago so we could catch up on all the house things we've neglected.
Big reason not to trust electric/ceramic heaters is that WHEN the power goes out, then you've either got a huge problem or you have to scurry around in nasty weather to get the job done. We're done and ready for whatever.