I don't believe for a SECOND that anyone with children can give them a good, decent, full childhood right up to (and including) the university years WITHOUT A CAR. There's no way that every single activity or hobby or sport or pastime, that they are involved in (for the 13-14 years of school and college life,) is within 10 minutes walk or a short 10-15 minute jaunt on the bus. I can only surmise that your child(ren) have very limited lives with very few things going on in them.
Within a 2-minute walk of my front door: a Tesco, a Sainsburys, an M&S, a tube station, multiple bus stops with 24/7 buses, two coffee shops, a nice restaurant, a couple of takeaways, and the Thames and the Thames Path.
Within a short walk (mostly within 5-10 minutes, maybe a couple are more like 15 mins) of my front door: a train station, a second tube station, a theatre, an arts venue that does concerts and art exhibitions as well as theatre, a children's theatre, a performing arts centre that does classes, several parks, two pubs, probably 30 restaurants (including Nepalese, Tibetan, Venezuelan, Jamaican, several Vietnamese, as well as regular stuff like Indian and sushi), three other supermarkets including a Tesco superstore, two swimming pools, a horse riding centre, and at least four gyms. (I don't know about stuff specifically for children since I don't have any yet, but I assume loads.)
Central London/West End is a shortish train or tube journey, or in the other direction 10 mins on the train or bus will take you out into miles of stunning ancient woodlands. 90 minutes on the train and you're on the beach.
The Thames Path is almost directly outside my house and is gorgeous and there's a huge nature reserve with many different bird species and horses within easy walking distance of my house. You can walk for miles and miles and discover the most stunning countryside and coastal areas around the Thames Estuary, and still easily catch a bus and be home in 45 minutes.
I don't believe FOR A SECOND (look I can use caps too) that a child living somewhere rural/suburban with a car-driving parent could possibly have access to half the activities, hobbies and pasttimes that a child growing up in London but without a car would have access to, yet I'm not starting threads banging on about how all kids raised outside London are deprived.
I am extremely confident that there are few hobbies or sports a child or teenager could be interested in, apart from maybe mountain climbing or deep sea diving, that a child wouldn't be able to walk/quick bus ride to from where I live.
So don't act like people living in completely different environments to you or just living different lifestyles from you are fundamentally shit parents.