Shade
Monster Junkie
I've been reading "A Princess of Mars" by Edgar Rice Burroughs.
It is the granddaddy novel of numerous modern sf and fantasy tropes.
Even though it was written 100 years ago (1911), it is still fresh.
When I read it, those were my thoughts exactly. If you read further into the Barsoom series, you'll be amazed at some of the relatively modern technology and sci-fi ideas Burroughs imagined at the beginning of the last century!