Trouble with trains is you'd likely have to take multiple trains (unless heading to a major city) with a bunch of luggage. I find it easier to drive, my car could easily fit an entire family's luggage and it's not even an SUV. So can a rental if I'm going multiple countries away and therefore flying. On a train I'd just be a hindrance to everyone else with a luggage and a toddler that's got the energy levels of a thermonuclear bomb.

If I'm paying for your train (via taxes), you can pay for my parking (via an extra euro per day in your hotel cost).