They're not "their opinions" they are our choices where "us" is all of us together, abiding by what the majority of us decides. That's the theory. Despite its flaws it works tolerably well.
In a functioning society the do-gooders and the do-badders all contribute to the pot that funds the group's decisions. Everybody gets things they want, or can use, together with things they don't or can't. Some of those things; like legal and justice systems, prisons, public sanitation, infrastructure, transport etc. would be impossible otherwise.
Even while complaining, we all understand this; or I thought we did.
