Originally Posted by Always Flyin
The problem you encountered, IMHO, is that the Thai crew, used to living in a very warm environment, were comfortable and didn't want to lower the temperature because they would then be cold.
If the Thai crew prefer warmer cabin temperatures, imagine what most of the Thai passengers who aren't hustling around serving food and beverage prefer.
The cabin temperatures are never going to be optimal for 100% of the passengers. I typically find most airplane cabins to be on the cold side, so I always bring along a pullover. Rather than trying to impose one's temperature preference on everyone, dressing in layers may be the way to go.