The larger focus here would be on why you would not want to do it again. For example you might be extremely good at a competitive sport like Rugby but you would not want to do it again because of the physical toll it takes on your health and the nature of the injuries sustained. Similarly there could be acitivities you excel at but find mentally or emotionally stressful.
You can also look at external factors, so for example you may be very good at activities that take place in nature but you may not want to do it again to reduce the environmental impact of your actions.
A good way to end the answer would be to see how you would implement those skills in a different setting. E.g., teamwork skills from Rugby