This is what city services are for. In most of the world you can get a public park without a weird sub-government
HoA might be pointless if everyone lives on 5 acre lots where the stuff your neighbor does won’t really affect you but if you have homes squeezed into tiny 8k sq ft lots, we absolutely need some basic rules to live together in such close proximity. The rules can just be common sense rules that everyone can agree on but something needs to exist so one person can’t ruin it for everyone else. In a condo, you can’t just blast music during the quiet hours so others can sleep and go to work. In a neighborhood street, you don’t get to permanently park your giant RV and a boat and inconvenience others because you bought too large of an RV to fit in your own lot or are too cheap to pay for storage somewhere else and so now you have decided it to make it be everyone’s problem. This is just common sense which a typical considerate person would follow even without rules on the books but there are always a few that think they can just do whatever they want.
That's how you get Mr. Burns blocking out Springfield's sun.
Someone is making racket after 10pm or before 7am, or at all on Sunday? If they won't quiet down after being asked nicely, or you can't reach them, call the city - that's against national law. Someone decides to park something too wide for the street or over a certain size and weight? Call the non-emergency number, and a very eager tow-truck driver will show up with a quickness you wish ADAC (German AAA) would. Something has been parked on the street and not moved within a certain period (that I don't know off the top of my head) - tell the city that there's an abandoned vehicle and they'll put a sticker on it alerting the owner that they have 48 hours to move it. If parking is really tight in a neighborhood, the city will create a parking permit zone if you and your neighbors campaign for it. Someone doesn't mow their yard by July (before that, it's for the sake of wildlife) or won't get their tree that is growing over your fence trimmed? The city will make them if social pressure doesn't do it first.
I’ve never lived in a HOA that had to maintain roads, sewers, or street lights. All the infrastructure is covered by the county or city. Neighborhood pools, playgrounds, and common areas are HOA. That’s in addition to local parks, aquatic centers, and all the other local public service stuff the county and cities provide.
Our lots are 2,000-4,000 square meters or more.