I'll take that one.
Because I love my car - not the car itself, although I really do think it's beautiful - but the freedom that it gives me. I can get in it right now, without any planning or waiting and drive almost anywhere using exactly the route I choose. While sitting behind the wheel, I'm forced to not be able to do anything else than driving. That is a very nice time to think and just be. Some of the most beautiful scenery I've ever seen was in places where the nearest public transport option was a hour's drive away.
I can leave stuff in the trunk if I buy it one day and then need it the next day. I also do grocery shopping weekly - carrying 5 bags of food by hand gets old really fast.
The car is also where my younger kid's car seat is. I'm pretty sure nobody else would put their kid in there, the shape of the chocolate and cookie crumb mountain is exactly the shape he fits in you know.
So, yes, you can do what you described. In fact, you can do it already today, but having a car? There's a reason people buy and repair and like them.
When you consider the costs, cars just don't have the appeal they used to, and you can spend money elsewhere that'll make you just as happy if not happier, especially as more services orient themselves to remove cars from the picture, such as Amazon & grocery delivery services.
Besides, do you want a system that forces the rest of the public to buy cars? The congestion alone should be enough to discourage people from cars.
I often don't buy the cheapest food, but the food that I like.
I don't want to force cars on anyone - it should be an individual choice of course. What I'm saying is that there are a lot of reasons people want to own cars.
It's the choice between working with the existing system to make it better versus demanding that everyone adapts to a new system that you claim is better.
Maybe it is, but getting the whole world to change at once to a completely different and in many ways harder system is very un likely to happen.
Ah, and this is where we come to the root of the discussion. Because ultimately the question isn't "Why would ANYONE want to drive cars" (though I confess it was originally presented to you as such), but rather "Why should society and governments INCENTIVIZE continued use of cars."
The Boring Company's proposal here directly benefits people like you (and by the way me - I also love my car), those who can afford that privilege.
But our tax dollars and policies should be going towards systems that benefit the most people, and that will only happen in North America if we fall out of love with the "freedom" promised by our cars and realize that waiting 2-5 minutes at two different transfers, with a total trip length of 15-25% longer (optimistic, but that is realistic in cities with good public transport) is a worthwhile tradeoff for the greater good.
Indeed, which is why we need as a society needs to pay for more rail systems, a tried-and-true mass transit system that's been around a lot longer than the more inefficient cars.
Right now roads are such a wasteful government mess that's completely unprofitable. The personal automotive transport system is a failed experiment that society needs to move on from.
And we need to stop subsidizing the wasteful and destructive suburban lifestyle.
How much more of my money do you want me to pay for your roads so you can have the luxury of riding in comfort?
Is there anything else that you would like me to pay for you?
That's how a proper public transport network works too. For example in London, when I want to go somewhere, I just whip out an app that plans for me the best combination of busses/subway/train/walking to accomplish that and I'm immediately on the go. The wait times are minimal (under 2-5 minutes) most of the time.
I live in the Netherlands which is a very densely populated country, and anywhere outside the city center or early/late on the day, the busses go every 30 minutes or hourly. At night there are barely any options, esp. between 2 and 6 AM.
This is the idea I was responding to. I think cars are mostly practical in suburbs and rural areas (I live in a city and basically only bike and walk), mass transit isn't the best solution for all personal transit.