Parking cars in cities not designed for them is a nightmare, but getting around with a car is so much faster than public transport, even if your city's is fairly decent.
If you scale size as well (like a motorcycle but e.g. as a tricycle for safety), you can realize some major efficiency improvements (doubling or tripling energy efficiency).
Which is why, bicycles should be the focus of transportation improvement.
Public transport is great, but if you're going to a less good part of the city, or even just a place that's unfamiliar, and less frequented, it might be a bit more difficult to get around.
And public transport travel distances can be patchy based on where the stops are, especially if you're going to the outskirts of your city.
Also when having to be present in the office, that extra 15-25 mins (x2) it takes to get to and from the office adds up quickly.