It's true that these arguments do seem to go on forever and very rarely does someone change their viewpoint based on these discussions. But debates on the value of incentives, the role of government and charity, and efficient resource allocation are important topics citizens would be wise not to avoid.
Avoiding them here doesn't mean avoiding them entirely.
Where best to have them then?
That's yours to figure out. The internet is full of places for people to talk about politics and economics, and has a relative paucity of places with good conversations about hacking and startups.