When in big cities I'm usually quite happy with rain. It creates scenes and situations that are interesting to observe. First of all, people are carrying umbrellas which by itself creates a certain aesthetic. Then there are the motions people go through to keep out of the rain, like running from one source of cover to another. However, in places where it rains all the time, you will also notice how well people ignore it. Amsterdam is one of those cities where people are always outside, rain or shine. So it's just as interesting to see what they don't do as what they do.
In this case the couple were taking selfies and the gentleman was texting the pictures on his phone, oblivious to the precipitation. I noticed that in Amsterdam people are always riding bikes regardless of the weather, in some cases holding umbrellas as they go.
I haven't quite perfected the art of ignoring the rain. I'm a duck and cover kind of guy. But from a temporary shelter I can stand there, observe and take photos of things around me. The best part of that is stepping into a bistro and waiting it out with a hot chocolate. Then, sufficiently refreshed I head back out for more fun.