As well as attitude/mentality, I also think it's a pay-off between wages offered at a lower league club, and what you can earn in a "proper" day job.
For example, if football wages on offer are £500 a week, but you've got the opportunity to earn that, or more, with more job security then it makes sense.
I don't know if that's the situation here, but it's certainly how I would be thinking.