I love to eat hard boiled eggs.
I enjoy them as well!  Is that your favorite way to prepare an egg?
I like them scramble too.  But when boiled I prefer them  soft=boiled, even when those are not recommended for people who may be susceptible to salmonella.
What does "soft-boiled mean exactly and why are you susceptible to salmonella?
Soft Boiled eggs are when the yellow part is runny.  I am not susceptible to Salmonella but still there is always a risk when eggs are not fully cooked to contract it.
Oh, I get it.Do they taste better when they are slightly under-cooked?
I like them better that way, yes.  But of course there are variations in the degree of cooking and methods to cook hard-boiled eggs.
Are eggs eaten all over the world as a breakfast food?
Maybe not everywhere but certainly boiled-eggs are a popular breakfast food in many countries besides the U.S..
What are the nutritional benefits of eating eggs?