Because in reality it isn't so possible. Barring extremely unlikely circumstances one or the other will be our next President.
Trump may not be particularly liberty-friendly, but we have rarely if ever seen an enemy as open, virulent, and complete as Clinton.
I posted a thread on Hillary titled "Hillary is a Career Criminal". If you can watch that video and not afterwards find Trump preferable, then there's something wrong with you.
I wonder how much of this equivocation stems from people being too young (or senile) to remember the Clintons' last time around.