Is everyone who has an active avm on medication?

I currently am not on medication as I don't feel I should be. I rarely get headaches and have only had the 1 seizure, 2 years ago. I got a second opinion with a surgeon a few weeks ago and he said that if I wanted to continue to see him, he would prefer I was back on medication. I understand that being on medication is probably what they advise everyone to do, however as I have no symptoms. I feel there is no need. Am I being naive about this??

Have they done a recent EEG on you?

yes I have had 2 done

Most recent one was in 2012.