I don't find any difficulty when being a pedestrian in L.A., besides actual distances.

As a pedestrian you don't need to "share the road", only to cross it. Sidewalks seem plentiful, even if underutilized, and most road crossings have been well marked and signaled. Cars have generally been respectful when I cross.

Cycling here would certainly make me more nervous, outside of the corridors with well-spaced dedicated bike lanes. But walking is fine. It's good exercise and the weather's great.