My son was a ramper for a while. It is Very hard work. You should be in good shape if you choose this job and be prepared for some strain on arms--those bags can be quite heavy.
Weather is also a question as you are outside in all kinds and should be able to get to work in bad weather and soldier through cold.
But the whole family loved having the temporary flight privileges and traveled a lot during that period. A friend who still has flight privileges with Delta tells me that it is much harder to get flights nowdays since the number of flights has gone down. I suggest that if that is your main reason for taking the job, that you try to talk to folks with that airline who are on the ramp ( low priorority if recent seniority) and see what their travel luck has been.