Have been here for 7 years and also see the split between transplants and those that grew up here and are just used to horrendous commutes.
I drive though and wish I didn't. The start to my day has been far less stressful when taking a train, bus, or carpooling. I've kept my car around because the nature of working in LA means that you might go from working one mile from home to somewhere all the way across the city. People say 'live closer to work' but it's kind of hard when you have an area you like living in at a (relatively) affordable price.
This ties in with the families/homeowners. Work moves, or closes down, and you might end up having to drive where it goes or where you can get a job. It's hard to live centrally and public transit is still in its infancy here.
The subway is getting expanded, though I feel the hub and spoke pattern doesn't help us as a city, and the stations are too widely spread apart to make it worthwhile to walk to. The buses...well, it would take me an hour, with one change, to make it 2.5 miles to where my work currently is. That's if it comes on time (which it never does). There aren't dedicated bus lanes, and people would protest if they cut down a lane on some of the major streets to make it so.
Biking is an option but I'm not really into the risk over reward with that at this time. Too many people I know have been doored or hit by cars (at least one a hit and run). Police don't enforce traffic laws and that makes it less safe for cars, bikes, and pedestrians.
Lyft/Uber have been a godsend though. Whether carpooling to other places in the city, and sometimes to work (my coworkers all leave at different times so it's hard to do regularly), and especially for safe nights out, everyone in my age group (mid-20s to 30s) heavily use the apps. I only use Lyft due to having some moral opposition to Uber, plus their drivers always seem better and not just former taxi drivers (who were shit when they were taxi drivers). I used to take taxis prior to the apps but always had trouble with them showing up at scheduled times and knowing where to actually go.
So, for now, I'll drive to work and feel a little guilty. I'll take Lyft and the subway when necessary. Still a sharp nope to the buses.