WHY AM I SO GRUMPY?

I'm pretty sure I'm one of the people that inspired "resting bitch face", but why am I so grumpy? I can't wait for the day when I'm old 👵🏻 and my grumpiness will be socially acceptable
  1. People 👨‍👩‍👦‍👦
    I get so annoyed so easily by so many people. Probably why I ended up in a profession where I sit alone all day staring into a microscope talking to cells 🔬
  2. My clothes are too tight 😳
    It probably doesn't help that my pants feel like they're cutting off my oxygen supply.
  3. Lack of sleep 😴
    I don't have kids, nor do I have a crazy job like @TT so there's really no reason that I shouldn't be well rested.
  4. It's in my genes
    I'm not trying to blame "nature" but I've never been a ray of sunshine ☀️. Part of my grumpiness has to be inherited, right? 😕