As a child I liked ketchup on scrabbled eggs only, but later on in life...never. My Girlfriend who is now my Wife loves it, no matter which way they where prepared. It made me sick, but i named one of My guitars "Ketchup On Eggs" just so everyone that saw me play would ask about the name....not a very high percentage liked ketchup on their eggs.
Sometimes on scrambled eggs, never on sunny side up, poached or over easy... & I have yet to see someone eat it on hard boiled, that actually sounds suspect.
Gross! My parents make "Denver Omletts" and they put ketchup on them, they have ham and some other stuff in them, and I find that disgusting too. Ketchup and eggs do not go together.
the only thing that belongs on scrambled eggs for me is