Zacs - not all cartoonists are caricaturists, even the political ones. A lot of them criticise ideas rather than people. Other caricaturists just draw people without getting involved in politics or topicality at all. But because Bell's a caricaturist, and political, and editorial, and topical... he's really got nowhere to go except nihilism, anti-whichever party is in power but anti the opposition too. (And he doesn't like other countries' governments either.) Personalising everything isn't necessaily useful, but he has to, because he's a caricaturist.
Did he ever do a cartoon, for instance, celebrating Britain's Olympic success?
All I could find was this - personalising and politicising it again:
http://www.theguardian.com/commentisfree/cartoon/2012/sep/10/steve-bell-conservative-olympic-legacy
He doesn't seem to be able to just enjoy life. I admire his drawing, but if he could just stop moaning...