As a train traveler in Bulgaria (absent from this statistic but present in the one posted in the comments), I can vouch for our low rates of train commute (still 3 times higher than Greece) The car culture is going strong with everyone using their own vehicle. A lot of places are barely reachable by bus and unreachable by train. It takes longer and there are delays. The security is questionable with creeps causing trouble fairly often, despite police always being present. It's rather dirty, the trains are mostly Soviet era. We can't talk about air conditioning, only open windows (which you prop open with an item that you're not afraid to lose) and scorching radiators.

Despite all that I love commuting by train. I can sit comfortably, stretch, walk around, use the (very poor) toilet if needed. I can cross stitch when creeps don't try to talk to me, I try to sit around grannies that take interest at most. It's cheap, you can go from the coast to Sofia in about 7 hours for 15 euros, half if you have a card. It's easier to talk with the person I'm traveling with. The scenery of rural Bulgaria is absolutely beautiful, and best of all - No motion sickness!