To protect against any and all harm
To ensure equal and fair outcomes
To prevent unjust enrichment
To set boundaries of individual conduct
To prudently conserve public resources
To provide orderly protections of individual rights
To maintain social order
To maintain social justice
A poll cannot capture this adequately. There are different levels of gov't and different ways they can regulate Local gov't empowering traditional authority structures like the family is a long way from the arbitrary, centralised authoritarianism of a social democrat, central state.
In general gov't can interfere enough in my book to keep society together and flourishing, it must do it at the most appropriate level, according to the principle of subsidiarity thought.
"It is written in the eternal constitution that men of intemperate minds cannot be free. Their passions forge their fetters." - Edmund Burke