I think some people seem to have a few hang up's about Amsterdam.
It is not seedy and dirty as some seem to think and the red light area is actually one of the most popular tourist attractions in the city.
I've only been a couple of times, but each time the red light area was full of tourists walking through "just having a look".
It's one of those curiosity things, if you have never been and just "heard" about it, you build up all these images in your mind, and probably imagine a seedy dirty street with loads of dirty seedy men, but once you've seen it for yourself you find (well I did) that those images completely wrong and it is actually quite a pretty area and has a couple of good bars too.
"She Rolls, 45 knots, 90, 135, nose comes up to 20 degrees, she's airborne - She flies, Concorde Flies"