system
A chat on subreddit /r/NoStupidQuestions
human
A lot of this comes down to how the issues are framed. Few Republicans would characterize anything in your list the way you do. I'm not saying you're doing it maliciously, or even that you're wrong, but if the question is "why would you chose to be a racist Republican" many would fight against that being attributed to them. 

Just to go through your list. 

&gt; Xenophobic 

The Republican Party has recently become much more isolationist and much more anti-immigration. But neither of these are really inherently immoral positions. Isolationism is a position held by prominent members in both parties, because increased globalization has crippled industries which used to be U.S. cornerstones. 

Immigration is more partisan, to be sure, but a Republican would argue that no foreign citizen has a *right* to become an American, especially if they do not follow proper procedures. 

And when it comes to headline issues, like how migrants at the border are treated, that goes back to being pretty bipartisan, nobody is good at handling the situation, because it's pretty much impossible to handle. 

&gt; Racist

Again there are very few republicans who would accept the label of "racist". True, Republicans are generally against many programs designed to promote diversity, but it isn't like there aren't valid criticisms of those programs. Things like affirmative action do negatively affect white and Asian students, because very often college admissions are a zero-sum game. 

&gt; Against women choosing abort

The popular Republican position on abortion is that it is equivalent to murder. That life begins at conception, when sperm meets egg, and that terminating that life is killing a human being. Whether or not you agree with that assessment, that is the argument. So the people who oppose abortion do not see themselves as "the bad guys" they see themselves as saving babies. 

&gt; Siding with the rich (lower taxes for the rich)

The rich currently pay a disproportionate share of the taxes in the US. Of course they make a disproportionate amount of the money too, but they pay a larger percentage of tax than poor or middle class Americans. Even the most extreme Republican proposals are for a flat tax, where everyone pays the same percentage. Generally tax cuts to cut more from the rich, because there's more to cut. 

&gt; Anti socialism (which works in Europe?)

Europe isn't socialist, it's mostly made of capitalist countries with larger social safety nets. Republicans are against expanding social programs too, which is I assume what you're talking about. But there's also different ways to define "works". It's free, and doesn't bankrupt their governments, but the difference in both quality of care and speed of care between the US and countries like Canada and the UK is pretty severe. Especially for major but not immediately life threatening issues. 

&gt; Against gun control

Gun Control is definitely a touchy subject for republicans. And there are both philosophical ("Why should a government have a monopoly on force?") and practical ("How are you going to take away guns from people who are obtaining weapons illegally anyway") arguments. 

***

 I'm not trying to convince you on any/all of these issues. I'm not even a believer in most of them, but my point is more that it's not just cut and dry for *any* of these issues. And depending on what corners of the internet you lurk, or what media sources you go to, they may seem like obvious questions (going either direction), when in reality they're all much more complicated.
gpt
&gt;The Republican Party has recently become much more isolationist and much more anti-immigration. 

It isn't that Republicans are against immigration, not at all, we are against *illegal immigration*.  Letting thousands of people in, per day, that we do not know their intentions, if they are sick, if they are criminals, or how to keep track of them is extremely dangerous to a functional society.  You will have half the nation who doesn't carry insurance, can't read or speak our language, doesn't contribute to society in the form of taxes but uses all our infrastructure, and doesn't follow the law and *can't* because they don't know anything about it and therefore can be easily manipulated and exploited.  It is a tragedy for those people, we want them to immigrate properly to get a leg up and join society, not be a permanent underclass hiding from the law and working for cash struggling every day.  It isn't right and it needs to stop!