I've read a lot of Nietzsche. To single him out as critical of others is not a particularly useful way of looking at him -- he was more abrasive and comical in his criticisms, but keep in mind that Plato ridiculed
most of pre-Socratic philosophy in his works, and Aristotle was highly critical of Plato. This is nothing new.
Nietzsche's best writing, in my opinion, is in Genealogy of Morals
, which shows how so many of our values are simply culturally inherited -- but not necessarily grounded in anything other than this inheritance.
I do have a question about calling one's self a "Trotskyist" or linking one's self (for that matter) with any other historical political movement. Trotsky has been dead for a good 3/4 of a century, and he was central to a political movement that arose from the collapse of Tsarist Russia, the needless slaughter in WWI and worse
slaughter in the Russian Civil War, and an idealogy put forth my Marx in the 19th century that has proven not quite so "inevitable" as Marx (and Lenin) thought. We're now in a different context, a different time, and with a lot of experiments in Marxism to reflect upon. So are you really
a Trotskyist, or would it be more accurate to say that you're something else but with influences by Trotsky?
It's kind of like how the Republicans call themselves the "Party of Lincoln". Yes, that's true -- in 1860 the Republicans were liberal and generally abolitionist, and the Democrats were southern aristocratic slaveholders. But a lot changes in different contexts and different times...