Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: That said–due to passing the 50yr mark awhile ago–I know most of the #horrific damage to the #planet won't occur before my 'natural' #death.
This tweet contains emotions: 
fear, sadness