For intercity busses, keeping an accurate schedule is essential. If you miss your bus because it ran ahead of schedule, it's not a five-minute wait for the next one; you'll possibly even be booking a hotel for the night.
For express busses, stops are far enough in between and all major locations, so you may as well stop at all of them.
For milkrun busses, where the frequency is so high, scheduling errors are only really a problem if the busses bunch up and create excessive gaps.
If a bus trip takes 45 minutes when a car takes 15, more people drive and then traffic gets bad. But busses with dedicated lanes and coordinated light-timing can go much faster than traffic, when they aren't stopping for passengers!
I think you and I must live in cities with very differently-run transit companies!
For express busses, stops are far enough in between and all major locations, so you may as well stop at all of them.
For milkrun busses, where the frequency is so high, scheduling errors are only really a problem if the busses bunch up and create excessive gaps.
If a bus trip takes 45 minutes when a car takes 15, more people drive and then traffic gets bad. But busses with dedicated lanes and coordinated light-timing can go much faster than traffic, when they aren't stopping for passengers!
I think you and I must live in cities with very differently-run transit companies!