Should I Keep Checking For Brain Aneurysms Even The MRI Shows Normal Since My Family History Has This Disorder?

I was diagnosed with multiple brain aneurysms in 2003. I had my first surgery in Dec of 2003 in NYC and they did a coiling procedure in the largest aneurysm. Then Jan of 2005 I had another procedure in NJ and had a stent put in the artery that had the aneurysm that was coiled. The coiling shifted a bit and there was another aneurysm in the same area so the stent protected the artery for both aneurysms and no coiling was needed. I had MRA's for a few years and I moved to PA and in 2011 I had an angiogram to check everything out and they saw that the remaining aneurysm grew so they decided to do a stent coiling procedure that year in PA. I had an angiogram a few months later and everything looked good and this month I had an MRA and that looked good too. The Interventional Neuro surgeon said that I never have to be checked again and just stay on 325 aspirin. I felt a bit nervous about it and said that to him and he said it wasn't cost effective and having these tests aren't good to have. I understand the tests aren't good to have a lot of them and cost effective didn't make me feel very good. I feel nervous about not ever having it checked again. My Grandfather died of an aneurysm and I have had multiple. I was just wondering if I should have a second opinion about having them checked out again in the next 3 to 5 yrs. Can you give an opinion?