In my city, stroads were created, presumably by agglomerative ad-hoc decision making as the population exploded for several decades straight. Now, in the majority of places, there is no width left in the right-of-way to add good sidewalks or bike paths. I don't know if the situation is similar elsewhere, but here it's clear to me that the concept of the stroad is useful, and that it's something to be avoided as much as possible in the future.