This affects me so it should be regulated. If it doesn't affect me it shouldn't be regulated.
Some of the stuff the pro-regulation types want regulated is nonsensically stupid: in the EU, the shape of cucumbers, the brand names of cheese, the power output of a tea kettle, the strength of hair dryers — none of those things have any life or death consequences. People want to regulate internet content, the height of fences, the width of doorways, the capacity of private toilets — even if those toilets connect to a septic system and don’t connect to the sewer mains. Even fucking lightbulbs are subject to the agenda of unelected officials in Brussels.
People, especially left wing people, just LOVE regulation. They like forcing by people to abide their opinions on how things ought to be. Considering most regulation is by executive agencies and not actually written by accountable elected officials, excessive regulation could be argued as being contrary to the ideas of a representative republic.
We need less overall regulation, but that doesn’t mean NO regulation.
If the price of a product included all externalities, then yes regulation isn't needed, however it doesn't and can't, and this is where the usual anarcho-libertarian views fall down.
Hair dryers become a fire hazard above certain temps, same with the tea kettle. Septic toilets can overflow if not properly sized and done on the cheap in neighborhoods. Fences fall over, trash in your yard impacts house values of your neighbors that you can't recoup, width of doorways affects handicapped access as well as impedes egress during fires. I used to service homes affected by disasters so I've seen a lot of these first hand because we're in an area with a lot of houses built before the regulations. Regulations clearly provide value, especially when protecting property and safety rights that either are unlikely to be recouped or aren't able to be effectively proven otherwise.
I absolutely HATE neighborhood associations though. What you're growing in your front yard, who you have over for guests, what outrageous color you paint your house, none of that impacts other people nor contributes to overall safety of others.
You gotta admit there is a lot of dumb regulation as well that is frequently brought up by lobbying. Why can't the government just send me a tax form instead of me needing to file my taxes manually or use TurboTax? There's a lot of stuff like that too.