Not all D&D players quite understand how to write a backstory for level 1
D&D combat mechanics are weird...
Every D&D party had a rules lawyer... and everyone LOVES them...
A long rest is all you need to fix everything that's wrong with you
Waiting your turn in D&D can be very frustrating
Nothing in the rules say you have to act any differently
Ruining another players equpment in D&D is a no no
Teamwork is the most important part of D&D
Some players are just never paying attention when playing D&D. Even in the big reveals!
Playing D&D can be hard, sometimes life gets in the way and you go on hiatus for months at a time