Aortic aneurysm anxiety. Is this one of the worst health issues? Like a timebomb

No,should not. Elective ( means not as in ruptured one ) aortic surgery has excellent result , with very low mortality. Recently more and more cases are being done by endovascular stents with out opening abdomen ( similar to coronary stents) observation for small aneurysms , surgery only if size is increasing, may be causing anxiety.
Serious . But manageable. Get follow up ultrasounds each 6-12 months. No smoking. Control high blood pressure. Walk for exercise. Most easily treated with endografts. Hang in there.