It is my opinion that the reason we see more of these "my snake likes to be petted" accounts during the winter is for three main reasons:
1. The newer owners of corns were probably more likely to have gotten a hatchling at first, and their babies are now finally calming down enough to be held easily
2. Because it is winter, there is less outdoor activity and we all tend to handle our snakes more often
and/or
3. Because it is winter, snakes of all types tend to want to stay on a warm spot in the middle of a relatively cooler room (Say, a 98.6F arm in the middle of a 75F living room, perhaps?)
Maybe it's just coincidnetal that these posts tend to occur more frequently in the winter months than at other times of the year, but that has been my perception, anyway. If it is accurate, I would suspect that any, or all, of the above reasons may have more to do with the "cuddle factor" of your snake than any emotional attachment you might suppose he has for you.
Just a thought ...