So why can't they show the routes for bus lines???

Clicking on a metro station in lots of cities will draw colored lines of all the metro stations that pass through it. E.g., Times Square:

https://maps.google.com/maps?q=type:transit_station:%22Times...

But this doesn't work for bus routes, which would be 1000x more useful.

Because, with a metro, you can look at a metro map and easily figure out which lines pass through the station -- there are usually only 1, 2, or maybe 3.

But in a lot of cities across the world, there might be 30 bus lines that stop at an intersection, and printed maps don't even exist of the bus lines because there are just too many to draw.

But Google could show the 30 bus lines instantly, so you could actually see how they fan out the further away you get, and you can easily figure out which of the 30 buses, if any, go to your desired neighborhood.

I've been waiting for this feature for YEARS... and it still doesn't exist. :(