One of the most important things to men is ACTUAL intimacy, not the typical "luv ya babe" bullshit the majority of women dish out just to save face or go through the motions to keep the cash and prizes flowing. While sex is intimate, it's realistically pretty boring and plain. Women lay there while the man does all the work and once he blows his load that's about it. When it comes to sex, men have always done ALL the work, the approach, the dinners, the courtship, the flowers, and all the rest is a huge effort for men. Everybody knows this so it's not a debate, and the vast majority of men don't mind investing all that effort and time if there is a worthwhile payoff in the end.
Having a big dick is great for women, lasting a long time is another perk, and with a fast recovery time it's once again a bonus for the woman who does little more than just spread her legs or dress up is some outfit, as if putting clothes on is some grand feat considering how often women complain about it. What does the man get? Not a whole lot, he does all the work to convince the girl he is "worthy" and has to do all the preforming and put forth all the effort and all she does is drop her panties.
Chastity totally reverses that dynamic and put's the woman is the drivers seat. She has to be creative, and make it interesting or "Tease & Deny" to draw out the intimacy and it give her more sexual control, which every woman on earth constantly demands, even though they have had that since the dawn of time. The woman gets to "dominate" the interaction rather than be passive and be acted upon. The chastity device removes the "sex component" and builds a "connection component" because both people have to really be involved and keep it going instead of one side doing all the work and the other getting all the perks.
Think I'm wrong.... When was the last time you were focused totally on sexually satisfying completely a man and were desperate for his attention and got NOTHING for it?
Never...
That's what makes it appealing, both get a deep emotional connection, mind blowing sex, and a huge reservoir of trust is developed and all of that happens without ever fucking. Chastity is about real and tangible female involvement, not just going through the motions.