As a man or woman, would you prefer someone who has a fetish instead of being interested in sexual inter course?

Really, it's a matter of to each their own.  I'd like to be with someone who is interested in sexual intercourse, but is interested in more than just intercourse.  I'd prefer someone who is open minded to trying new things and mixing up what we do intimately.  If that person has one or more kinks or fetishes (within reason), wonderful.  We can explore them together.

No. This is what porn and spending too much time on the internet does to human beings.

If you aren't their type of person, it really doesn't matter whether you can understand or relate to it.  They're not into you like that, and you needn't think about what they ARE into, since YOU'RE not into it.

Learn to leave alone those parts of the universe that don't really apply to you.  They're your friends, so be friends.  Don't concern yourself with their religions, their bank accounts, their politics, or their sexual festishes.  You don't need to understand it, and you don't need to have an opinion about it.

Young people have an astoundingly common tendency to think that they must know how the universe is supposed to be - what's right, what's wrong, what's good, what's bad...I suppose it's a stage of learning how to be an independent person.  

They get so militant about how they believe everybody's supposed to think and behave.  (Hence all this nonsense about "what I support" and "what I don't support" when in fact they're doing nothing in terms of support or anti-support beyond voicing unsolicited opinion.)  This is a waste of their time, and that of everyone who is unfortunate enough to hear them.

Let others romp around however they need to.  Leave it.  Your opinion is not needed.  Return your attention to the way YOU like to romp, and seek partners with similar interests. 

"no interest in the naked body"

Asexaul.

"no interest in the naked body, but an inanimate object"

Objectum-sexuality.

BTW, this is the lgbtq section, it is NOT the Objectum-sexuality section, there is no link between Objectum-sexuality and the lgbtq community.