Well none of it is going to affect you personally so it makes sense. Grandma and grandpa were going to die sometime, and who cares if the grandchildren are going to have a hard existence because the world they will grow up in is much more harsher than ours? We probably won’t see substantial consequences of our actions in our lifetime, so why not YOLO? Only if there is really a God would we see any kind of punishment for this attitude.

But still, if you had some empathy for those who are older or much younger (not even born yet), their would be a lot of guilt in this thinking, the shame would be deserved.