1st of all Gimli is a badass master Dwarf! 2nd it was reasonable before to have a beard because you didnt have electrical shaving equipment, so trimming it was more likely than having tons of cuts or pubic hair look on your face. Legolas likely didnt have beard because Elves are quite dashing. Some races dont have beards in the human race so its not impossible for them to not grow it either : )
What i mean is people do it just because it makes them look cool but in generality it doesnt. in the 50s they saw beard as unhygenic, i dont know when electrical shaving was introduced but it was muuuuch more convenient and easier to shave since the neck is so thick and can handle it, perfect invention more or less!
What i mean is most people who have beard reminds me or look like this herod guy from that clip... It just seems lazy thats all! And is unhygenic in general if you want food in your beard. And some are beards worshippers so this is my take on it. I mean sure beards can be cool... if you lived in medieval times but not now : /
I will assume the romans are beardless because they were quite daring brutes so they face death and cuts without hessitating with their knives



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