It's very common in our place as well. Yeah I eat those, but seldom though, I just remember them when I just see someone eating it.
Question to the OP though, did you find anything wrong with salted eggs though? I'm just curious because mostly in Asian region, people love to eat it from time to time, (meaning not just 1 in a month).
Eggs has been in centuries put into bad light, however, recent studies shows that it's not bad for our health, actually it has a lot of benefits. What makes eggs worst though are the food you eat together with your eggs, like ham and bacon, those are processed foods.