At our field, if you depart the FBO/fuel ramp there's a turn obscured by large desert bushes leading to Alpha 3 taxiway that is the ONLY way to get to the runway (or from it). Unless you have reverse on your plane, not announcing will eventually lead to a "nose to nose" situation where someone is going to have to shutdown, get out and push. This portion of A3 is about 45-50 yards. With student traffic, jump school planes, fueling AC and transient AC, that area gets very busy on weekends.
If I'm at a field that I can see everything well and know that landing AC can see me as well (not obscured by trees like the 52F accident), then I won't announce taxi.