Life itself is ultimately a waste of time. Nothing you do can or will come with you to the void of nothingness afterwards. How one wishes to spend their finite reality is as valuable as they personally will it to be. Even being remembered in the short term or through history holds objectively 0 meaning to you once you pass away. I say all this to reiterate meaning is something you personally ascribe to things. Whether you pull a nihher and blight the social systems while living on drugs or a God fearing catholic who donates to charity. Do whatever but if you can help it don't try to directly harm others and sour their existence.