If you feel arguments are over things which are worthless than it is likely you misinterpreting the topic's worth, rather than the topic actually being worthless. The only truly worthless arguments I can think of would be those of a subjective nature-
Godsmack sucks
Godsmack fuckin rulez
Nuh-uh
Fuck you
In most cases even if the topic is seemingly worthless there is an underlying principle of great value. Thinking about any issue illogically, regardless how small it is, represents an inherent danger. A danger to oneself and their own thought processes about other topics. A danger to those around them and society by extension.
Arguing is a fundamental duty of humans. In order to better ourselves we must seek to better our thoughts. In order to better our community, our society, our nation, our world we must seek to better others' thoughts as well.