For no reason? In his first appearance in 1939 his home gets 'bombed' by air breathers blithely blowing up the ice pack. In his first Silver Age appearance, he returns home to find his home destroyed by an atomic bomb. For his entire existence air breathers have been literally crapping on him and his people, polluting his environment, killing off the sea life they live off, stealing their heritage, tech, magic, and even the Atlanteans themselves. In Atlantis, he's spent his whole life fighting off coup attempts from 'real' Atlanteans, dealing with prejudice over being bi-racial (including grandfather), having his loyalties questioned, while not being able to trust most people, who were after power.
I understand people not being interested in the ocean or fantasy setting. I understand people not liking the character because he can be jerk or is combative, but there IS actually 80 years of characterization and world building behind Namor's attitude.
Exactly. I agree. That Namor was more nuanced and better written. Despite being a prince, he was written as an outsider and an anti-establishment hero.