What did your doctors propose? At that size, you probably have time to get another mri in six months to see if it grew at all. As a point of reference, mine was 3.5cm. Alot of people your age do opt for radiosurgery to avoid the risks of surgery. But I do know of one person around your age who had surgery and it went quite well. My father had knee surgery at 82. So while radiosurgery is quite common for someone your age, it is not a hard and fast rule, unless the doctors think your physical condition is not strong enough for surgery. Also, some people do wait and watch with periodic mri, and sometimes it does not grow any more.
I suggest you ask one of the doctors you consulted with if you can wait for another mri in six months. If he agrees, it may give you the "breathing room" to reduce the pressure on your mind. Then you can get more educated, and weigh the pros and cons of the alternatives without feeling rushed. And it's generally good to get several opinions from very experienced teams.