Especially if I want to take my kids, I need to get a different rail card for families, and when you add it all up it's a lot more expensive than taking my car.
For some reason, public transport is always priced in a way that makes it really expensive for occassional usage. If you go everday, then an annual pass is a good value.
If you only ride on public transit occasionally, and you have a car, then taking the car is almost always cheaper. It shouldn't be like that.