I suppose you're right -- I am biased.
I'm biased against Trump because I can't find a single redeeming quality in him. He's egotistical, reckless, dishonest, and lacks the ability to focus on one topic longer than the length of one sentence.
He has no economic policy, other than deporting illegals and starting trade wars. And his strategy for defeating terrorism includes war crimes -- such as killing terrorist's family members. He even threatens to default on mutual defense obligations the US made to NATO partners.
Many of his current policies go against personal beliefs he held as recently as a few years ago.
- He was recently pro-choice, but now says that women should be punished for having abortions, if it becomes illegal (which he claims to want).
- He supported the Iraq invasion, but now lies that he was always against it.
- He supported gun control, but now falsely claims Hillary wants to "take away our guns".
Even the policies that he started the campaigned with, have changed. The "wall", the Muslim "ban", using US troops against ISIS, etc. All changed.
Granted, it's OK to change viewpoints over time as events unfold. But Trump's shifting views are without any reason or explanation. He even lies that he's changed them -- even though he's on record.
So, either he is personally dishonest... or he has the attention span of a goldfish. Maybe both.