Deerlick said it. Buying our license is among the least of our fishing expenses. I spend at least twice as much on wading gear every season, and that's to say nothing of what I spend on tackle and fly tying. How about the ridiculous amount of gas we burn up getting to the water?

There's no legit financial argument for not buying a license. To not renew one's license is a political statement at best (and only effective if lots of others join you).