Rules of the Internet:
- Nobody ever convinces anybody of anything
- Nobody thinks that they are immoral
- You may as well be nice to people
...well, I exaggerate a bit.
The morality part is interesting - e.g. both the left and the right are equally self-righteous, so what is going on?
Moral foundations theory is one interesting attempt to explain it. From a different angle, groupthink is definitely a powerful factor here as well. "Groupthink" is a bit of a oxymoron to be honest - it is more like "groupfeel" as there is minimal thinking involved.
As individuals it is always good to be honest to yourself about your opinions - is this really your opinion that you thought up yourself, based on personal investigation? Or was it just absorbed from family/friends/school/media/etc.? One typical red flag is noting if your beliefs are identical to a typical ideology (e.g. cookie-cutter Democrat or Republican).
As CMA hobbyists, RSF members are, I think, more unique as individuals (and thus a bit less susceptible to groupthink) than the typical Joe Schmoe. Maybe that is why the board is so full of political debate all the time. At worst we get exposure to how people think from many different locations around the world.
Anyway, be nice!