No. Rightly or wrongly, I've devoted part of my life to causes I believe in, that I think are important for the protection of nature and the future welfare of human civilization. There's no guarantee that I'm right, or that my efforts are really helping improve things, but the time I spend trying to spread awareness of global climate change, for example, is time that I DON'T think is wasted.
I'm also learning, a bit late in life, to reach out more to individuals I care about, and to try to make their lives more comfortable or enjoyable if I can. My moral and spiritual beliefs, partly based on Christian and Buddhist ideas I was exposed to long ago, tell me that this kind of activity is not "wasted," but is an important source of meaning.
I also get enjoyment and a sense of meaning from appreciating the beauties of this world -- sunsets, street lights reflected from rain-slicked streets, the green leaves of trees shaken by the winds, the beauty of young women I will never know or even talk to, the exuberance of children, the remarkable music produced by classical pianists and symphony orchestras, folk singers, blues and jazz musicians, the many different tastes of good food.
All these are "blessings," as the evangelical Christians would say, and I try to thank God or the Universe or Whoever May Be in Charge for the opportunity to experience them. I don't think that appreciation is "wasted," either.
-- democratic socialist