There were no 'thumbs' on the politics forum a few years back (probably ten). The arguments were put in favor of having thumbs, by the same people who are now whingeing about them being there......those looking for some kind of recognition.
The thumbs are not a popularity contest, they are a tool where a forum participant can show support for the point someone makes.
If you want to feel loved, agreed with, or just warm and fuzzy, the politics forum may not be the best option.