They're still 20-30lbs to drag around (up stairs, etc.) and anything you're dragging around becomes cumbersome on crowded trains/buses. In many places locking s

They're still 20-30lbs to drag around (up stairs, etc.) and anything you're dragging around becomes cumbersome on crowded trains/buses. In many places locking something expensive to a tree just means someone will steal it assuming it's even legal to lock it to that structure. People also go to more than just work and I suspect, for example, a stand up comedy club would frown upon you dragging your scooter in with you.