Habitarian
A habitarian is someone who would rather die than try something new. They're like a turtle with no brain. They just keep going in circles because that's what they've always done.
We've always done the meeting at 9 a. m. Who cares if it's 8 p. m. now? 'That's how it's always been.'
We've always had pizza on Fridays. Who cares if it's Monday? 'That's how it's always been.'
We've always used the same office coffee machine. Who cares if it's broken? 'That's how it's always been.'