Because the President-Elect has shown himself to be dangerously autocratic, almost comically (if it wasn't so tragic) unprepared for governance up to and including things known by 8th grade civics students, grudge-holding and vendetta-seeking, not a fan of freedom of the press, again almost comically (if it wasn't so tragic) sensitive to insults and slights, and shows no sense of even understanding, much less respecting, the institutions that we have built to rein in this sort of thing.
Like I get it, I was in the streets during Clinton's terms and during Bush's terms and I strongly opposed the expansion of the shadow surveillance state under Obama.
But pretending that handing it over to Trump is a normal handover to a Republican administration is whistling past the graveyard.