Music is built on what came before. Copying sounds, and emulating them to a high standard, is extremely valuable in improving your own sound design and especially the production values in your own music. One of the best ways to learn is to mimic.
It's entirely natural and healthy to seek to emulate what you like and enjoy. Even if someone gave you the entire existing instrumentation for a complete track, even one that's fairly well known, most people would be likely to build something totally different sounding unless there's some super-recognizable element! (Sorry, Peter Gabriel got dibs on the shakuhachi.. )

