i like trains because
>they are historic: you can trace their evolution and usage over time
>they are multi-purpose: you can trace their sub-evolutions for hauling gigantic freight loads, tiny rural services, inter-city commuter services, etc
>they are big, powerful, fast-moving machines that just about anybody can get close to and touch, smell, and hear
>from when you arrive, travel, and depart, you are around other people in one way or another, so you can enjoy the vibes of being in a shared collective space
>they link up with other modes of transport
>they're eco-friendly
they're just cool and interesting ok