I very rarely use robots, and think I've only been "abusive" (not really abusive, in my book) once. What if I send a null UA? Or use it as an opportunity to sh

I very rarely use robots, and think I've only been "abusive" (not really abusive, in my book) once. What if I send a null UA? Or use it as an opportunity to share my favorite quote? What if the behavior of my software doesn't attack like a robot, does keep the request volume reasonable (use whatever you think is reasonable here) but also doesn't do what you might expect a human clicking around to do?