I can't even say why it's so enjoyable, really, but after adding a ferry to get commuters across the bay, and then dragging all my bus lines into nice orderly stops at the ferry terminal, and then seeing citizens immediately get in line because seriously anything is better than trying to drive through my city- and I should know because I tried it myself once-it's just a remarkably satisfying activity. As someone who has never been interested in seriously delving into traffic problems in Cities: Skylines-typically I just slap some extra roads around, or replace two-lane boulevards with something wider-I'm finally and genuinely enjoying focusing on solving my traffic woes.