Evaluate the intensity of sadness in the tweet "I've seen some get so discouraged in their old age becos they aren't physically able 2 do the things for God they used 2 do in their youth.". Choose from these categories: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.