Directions

The person or persons who invested the GPS for people like me need to be praised!
I can read a map and I am fairly good at directions but when I have to go someplace new in a downtown setting where there are way too many one way streets I get a bit nervous. I borrowed Kris GPS yesterday and it not only got me there but got me there quicker than the directions that were supplied to me. The directions that were mailed to me would have taken me about 5 miles out of the way and I would have had to back track which irritates me.

Speaking of a downtown setting, why in the world do so many cities have a ton of one way streets? Does it really serve a purpose or is it just to confuse as many drivers as possible?