@Butrflynet,
30 years ago i was about 18 years old, it started slowly.
I have to explain it better:
When i was a little child my mom very rarely allowed me to have a hot water bottle in bed, she gave me her hot water bottle but only when i was really sick. She never wanted me to always use hot water bottles. From 0 to 18 years i've used it 3 or 4 times only.
When i was 18/20 years old i started to use it almost each night, it was cozy thing, then i realized that i used it even if there were no reasons and most of all i realized; without my hot water bottle i were going to fell bad. So i went on; I liked it and i like it now.
It's not a drug addiction: nobody is going to tell me to go in Hospital for this.
On the other hand it looks like a harmul addiction.
My organs need to be regularly heated to work properly i suppose.