Senior citizens being the outright meanest demographic. Not by frequency, but by intensity. The amount of stubbornness, entitlement, and just absolute resentment for everything around them shocks me. The way they react to things not going exactly how they think they should go is astounding. Don't get me wrong, the majority of them are pleasant and wonderful. But when an old person is mean, it's on its own level. I'd say middle aged people are more likely to be difficult, but they never even come close to the tantrums that seniors will throw. Part of this could be chalked up to mental decline, but the main part is entitlement. Plenty of people experience mental decline, and dont become vitriolic assholes. They truly think they're special and should get whatever they want at all times. Its exhausting explaining to an adult why I can't do something for them that our organization is literally unable to do.