I know a few paramedics/EMTs. They seemed well-adjusted enough, but I don't think I'd enjoy the hours and such that they work for the money they get.
It depends on where and how long you work. At my job now, as an EMT I will start at $15/hr. In a year or so, I can be bumped to $17/hr. Maybe more.
At a hospital that provides BLS service, an EMT can make between $17-$23/hr.
Either way it's at least a livable salary. And the hours don't matter if you enjoy it. Otherwise it will burn you out. Many people who don't do it for enjoyment usually don't recertify.