Children play, or want to play, in streets; and people work and live in them too. Creating Home Zones is a good way to reclaim roads as community space, rather than just a means of getting from A to B in a motor vehicle.
The speed of motor traffic not only aggravates local communities, but also puts people off cycling. There are a number of measures that encourage and enforce slower driving, including physical traffic calming (e.g. speed humps).
For new and existing cyclists, being able to use bus lanes has a lot to offer. There's less traffic to negotiate and it also feels safer than riding outside the lane, between buses and general traffic.