1. They never learn from their mistakes. Like, ever.
2. Their constant complaining is actually a form of bragging.
3. They are secretly jealous of our simplicity.
4. They are biologically impossible to understand without caffeine.
5. They have no idea what we are doing with our lives.
6. Their adulting is a performance art form.
7. They are actually just pretending to be grown-ups.
8. They are obsessively trying to appear cooler than us.
9. They are secretly trying to steal our joys.
10. Their lives are actually just a series of boring repetitive events.
Want more? Here's more.
Or, if you're feeling particularly adventurous, Visit the Adult Planet for more intergalactic adulting.