Agreed.
In Los Angeles, EMS is run by fire departments. FDs that do not transport contract private EMT ambulances for transport. Medic jumps onto the BLS ambulance with his equipment if he deems it ALS (99.9% of ALS runs are code 3, even if patient is 100% stable but meets ALS criteria). If it's BLS, the EMTs transport code 2 on their own.
I would say 75% of these EMTs are simply trying to get onto a FD and that most seem to have no interest or actually hate EMS. Many go onto paramedic school to become a more attractive FD applicant while they openly "hate medical stuff". Often, once hired, they are forced to attend paramedic school, anyway. The other 25% are students who wish to be doctors, RN, and PA's. Some PD hopefuls, too.
Since the 911 companies often pay minimum wage, there's no alternative but to make it a stepping stone job. I'd say most EMTs are between 18 and 24. Even those who want to be career paramedics, can't, as they would have to become firefighters (a VERY lengthy process here...years of applying, usually).
So, what you end up with are companies with ridiculously high turnovers who know they can get away with paying minimum wage (and to be fair, the companies themselves don't seem to rake in THAT much money...). A senior EMT or Field Training Officer tends to be one with 1 or 2 years on. You do get an occasional "lifer" who makes it his career...but it's limiting...just transporting for the FD (even if you have a medic cert, private ambulance companies wish you to follow FD's orders to maintain their contracts).
It is definitely depressing if you care about EMS...especially when you get a look at how things are outside the local area and when you go to school for higher levels of care and realize the negligence being done by those who were forced to attend medic school. That's our daily lives here.
Still, Los Angeles is a busy area and a good opportunity to get call volume and experience. Just know that your idea of what EMS is will be warped.