Wood Elf and Half-Wood Elf get a bonus called Mask of the Wild, which automatically grants proficiency to Stealth checks. This is especially useful for the Rogue, who gets an advantage from using their Sneak Attack actions. They also get Darkvision, which allows them to see 12 meters ahead...
If you set your watches outside of the darkened bedroom or a cave-like most of us, it’s more gimmick than anything, but I will admit it does look cool walking into a dark room and seeing the crown glow. So taking it off, safe and sound, was a combination of sadness in seeing it...