Try not to be swayed by passionate opinions on circumstantial evidence.
I'd have a much easier time believing in sea serpents as classically described - with sightings and stories going back some 3000 years, than the plesiosaur like desc
Because they knew that they had ruled on earth for centuries and most powerful animal of this planet is still to come in form of humans (homosepians) .
They are extinct.
Isn't that what people suspect, Nessie to be?