Facts, reason, and altruism have a left-wing bias. 

Good thing pubic opinion is not the end-all be-all.

Or Democrats can just bribe with stimulus checks.

Humanity is terribly flawed so you're not saying much.

Flawed, yes.
But one thing being in the emergency services has taught me is that... In great times of need, humanity bands together to help each other out.
And that is something that we can all absolutely be proud about.

I don't get the disdain for it, honestly.

Yes socialism can be a bad thing in excess, but so can capitalism... Capitalism when there are monopolies in a market like in healthcare will end up pricing products/services to the maximum the market will handle, often pricing low-income earners out of a market entirely sometimes.
That is in stark contrast where socialist intervention can bring those costs down significantly by placing profits second and making it more manageable for low income earners.

But nations like Australia, New Zealand, Canada and Britain haven't given up capitalism in favor of socialism, we are just leveraging the benefits of socialism (I.E. Lower Healthcare costs and higher quality healthcare) to benefit the entire nation. It's a hybrid approach. It's not a bad thing.

Sometimes sensible Government planning and intervention in a market to stop abuse is a good thing. Who would have thought?

Honestly would like to see the USA take on a European hybrid Private/Public healthcare model, introduce gun control like Australia (To many CHILDREN are being killed.), bring education back to public hands, increase minimum wage to $20 USD an hour, take action on climate change.

Not the end-all be-all but pretty god damn important for a democratically elected position. 

It's sad to see how the Republicans are still bending over backwards to please Trump even after he was soundly defeated. They appear to lack a backbone and self-respect. You would think they would be glad to be rid of him. Thank him for the tax cuts, the judicial appointments, and blocking Hillary from the presidency all they want--but now they should ignore him.

Good for the GOP that the elective process in the US ain't exactly fully democratic.

Sad for everybody else, though.

It's very sad when someone thinks having humanity is a flaw.

Humans are very flawed creatures. It's sad but it's true.

Humanity: compassionate, sympathetic, or generous behavior or disposition : the quality or state of being humane

You are (perhaps sarcastically) confusing preference with bias. People may prefer something due to a logical evaluation of pros and cons or simply based on preference without any bias being involved.