It can be a great benefit to hold real estate licenses in several states. It can be a very expensive proposition to do as well. It needs to be kept in mind that license fees will have to be paid in all the states. Continuing education requirements will need to be met in all the states. Brokerage firm affiliation fees will have to paid. And so on and so on.
Unless you spend a lot of time in another state or have a strong client base there, it would be better to concentrate on making referrals. There are agents who are licensed in more than one state, but usually the other state(s) borders Georgia. These agents travel back and forth easily and often doing business.
If the other state in which to be licensed is further away, then one really needs to consider if it will be financially feasible.