Yes, I also like the idea of dedicated public space. It brings out really cool graffiti. For example, I remember seeing a huge mural on the side of an apartment

Yes, I also like the idea of dedicated public space. It brings out really cool graffiti. For example, I remember seeing a huge mural on the side of an apartment building in Warsaw. It's not "because he has something to say", but rather "because it's worth a shit ton". I'm sure there are many graffiti artists who have more interesting ideas than Banksy does. Would you be alright having an insightful tag on your wall that's worth nothing more than the insight?