Should a slave or sub have shaved genitals?

Yes without a doubt

Both wife and I used to completely shave but this year the wife decided to let it grow out full. It adds to our dynamic and her full bush seems mature and dominant against my shave cock. We typically only do oral (she receiving from me) and that has changed things as well now that I get a face full of hair every time I go down.

Always. I've been totally waxed since 2001.

In the past when I had a dominant hairy chested boyfriend, he would shave my genitals and blonde haired bottom on a regular basis. In order to train me to be submissive to him, he would have me only wear a white t-shirt that was cut short and hung down from my neck to my naval. My shaved genitals and smooth bottom were thus on display when I was inside his house or outside in his back yard that had a high fence for privacy. I did feel more submissive due to the shaved genitals and smooth bottom.

Yes

I'm more of a spankee than an out and out sub but that does mean I have to submit to my punisher and accept their authority. I understand that I will be fully exposed during my punishment so, if my punisher expresses a preference, I will present myself as instructed. It's possible I might be getting my first punishment for some time next month - if that happens, I will have to be hairless from the waist down.

Yes, as a sub boy, it strips me of my masculinity.

As a bi male, that is neither a slave or sub, I shave my genitals regularly. I find that I like the feeling of a man running his tongue or fingers over my balls and pubic area. It excites me! I find that my partner is more excited also. It is just nice to do!

When I'm with a woman, her naked vulva with her slit in the middle is extremely erotic! It draws my eyes, tongue, fingers, and cock to that delicious place every man loves to concentrate!

I find that naked pubic areas are definitely more exciting than concealed by hair on both men and women regardless of their sexual situation.

I’m a submissive and a masochist, but I am natural in the genital area and will stay that way. Underarms and legs are a different story. I am clean shaven there always.

Its totally down to the discretion or desire of their Dom and what he or she wants.

Like everything else in a healthy sexual relationship, it is a compromise. I personally enjoy my smooth balls and leave the pubic area trimmed but not shaven. Some partners indicate their preference and I try to accommodate to their desires. I personally like trimmed me but if they are comfortable not being trimmed, that is what I accept.

My dom wife tells me I have to be shaved.

Agree with many that it should be at the discretion of the Dom, but personally, I think subs should be shaven. For me it really heightens exposure - everything is fully visible, with nothing in the way. Also agree with what Barefootdude said - as a man, there's something about being clean shaven that makes me feel significantly less masculine.