GET RID OF BIOLOGY AND CHEMISTRY

explain everything with physics.
scientists should strive to explain everything as accurately as reasonably possible and as simplified as possible without oversimplifying. Physics is the best field we have available for such a task.
everything else is just remnants of ancient systems of trying to explain the nature of reality, and quantum physics is not well understood yet.

Physics may be the purest of natural sciences, but it can't do everything. Explaining all the shit that happens in simple chemical reactions, let alone biological systems, with only physics, is fucking retarded. Nothing would ever get done, because the systems involved are just too complex to adequately and coherently describe in terms of physics alone. We group together these complex pieces of information to make them understandable, and shoving them all into one bin makes everything a bitch to wrap one's head around.