I just think condemning people for feeling sad, even if its over small shit, makes no sense. Who decides what objectively is a 'sound' reason to feel sad?
Starving, poor people would look at all of us in disgust when we complain over first world problems.
There's no objective truth to anything other than facts. So that means that people are free to whine over whatever they please. If people are going to avoid them over it, then hopefully they learn to behave within society's context.
Either ways, I think when people say that whatever comes after life must be better, its because we all want more. It's wishful thinking.. Just like religion's heaven and whatnot.
When I was little I dreamt of death because I thought there would be dragons, and monsters and unicorns and people who can fly. I think many people think it's the doorway to a magical land where was more interesting shit happens than what we have right now.
But most likely we'll just seize to exist
boring.