I have a 2010 Ford Focus very hard to get key in ignition to start car?

Afraid I'll get stranded and can't get car started

Get the lock cylinder replaced. It is just the part that you put the key in, not the ignition switch. You might have to go to a dealer for this.

Not sure why, but a lot of Focus owners have the same complaint. I know Ford got a bad batch of ignition locks back in like 2002 or so, but those should have been long-gone by now. I had the cylinder changed on my girlfriend's '03 like 5 years ago. So, just replace it.