I live near Paris, and it's a shame to see this sort of thing on every surface here. It's so easy and effortless to trash the look of a place, and so much effort and pain to get it back to a presentable state. It just seems hopeless trying to stop it. Sure, you can point to examples of graffiti that don't look all that bad, and I imagine some examples can even be considered to improve the look of a space. But taking…
I like "Street Art" where permission has been given. I don't like tagging and property destruction. Maybe when I get a little older I'll find some graffiti exhibit at a museum and go tag it.