I'm not trying to change your mind at all. Just stating a fact that you're destroying personal, private property. All property belongs to someone, even if it is the property of the public.
All of us could find things we don't want to pay for with our tax dollars, but knowing that it is illegal, and continuing to do it by justifying the activity still makes it illegal. Regardless of the content/location, that is just logistics. Besides two wrongs do not make a right.
Just seems a shame to create something you seem so proud of that you post it on a public forum, but you won't try to preserve you work by doing it in a legal manner. As you said you have done the graffiti on the up and up.
Not starting a fight, but it keeps being said that its illegal...its illegal because some old fat white man in a suit decided that it should be illegal...the same old fat white man who is spending MY tax dollars on war instead of arts in the schools. F*ck their laws, they aren't laws that I agreed to, nor was I ever asked. So your right two wrongs dont make a right, but who is calling art wrong? Oh and I happen to volunteer in my community quite often and have painted over jucky tagging, not art. Also before anyone wants to point out that if I don't like the laws I should help change them.....I also do that, as a volunteer for more than one lobby group (I live near the CA capitol which makes it easier). Often the point of art has been anarchy and opening minds to that which is not regarded as "safe" or "mainstream"....this is neither safe nor mainstream and thats why I support it as an art form. We as artists and crafters should be worried about how the world views artists, instead of shopping at WalMart, wearing only Juicy Couture and VS, and believing what is being shoved down our throats though Fox news....art is about revolution! Its a revolution that I want to be a part of