Why are people often so predictable?

I agree with that. But, to give justice to your question, lets take it a bit further. We, each one of us, is shaped by that which we can comprehend most readily. The shit we don't comprehend? It's off-putting. Could even be scary. Often times comfort is the balancing weight against comprehension on the scales of history. Which way will the lever... lever. I apologize, I understand my jokes are dumb but I cannot stop myself for the life of... me. Anyway, We are systems under constraint. What we can do is derived from that certain balance. Right, well now I sound like Carl Jung and that is heresy. I'll see myself out.

deep and true

hi, I feel as if I haven't connected with you today
how are you
how was your day

They choose that life. I think on some level they know, but that's what they want. It is easier and it feels safe to fit in.

Creatures of habit

People are predictable from their larger ideals to their daily endeavors and it irritates me when they think they're being clever or revolutionary.

Everyone likes to belong. This leads to following the crowd

They're followers instead of thinkers and pathfinders.

Because people are all the same. A person is different, they can rationalize and think for themselves. But people, they're just mindless animals.