It is just a statement and not necessarily true, it is an assumption you are making. You are also not bringing any empirical evidence to support your claim, asking for some is farcical. It is not what my parents believe to be decent or not, it is not their outlook or judgement that is in question, it is mine. It is what I believe to be decent, believe strongly enough to appear before them and say 'Hello folks, me and this woman are acquaintances'. Have you ever been to a ruracio? Ever seen a prospective bride in a mini-skirt? It is a question of embarrassment, though morality is deeper down there.
Some time ago (I read this in a magazine), Mobutu banned a popular musician's very lewd songs from radio broadcasts. The musician protested hotly, Mobutu countered by asking the musician to sing them in the close presence of his mother. He quickly relented.
This thing of wearing rings and being circumcised is not what we are discussing; You are obfuscating issues cause you are running thin on ideas. Like you said, men also leer at decently dressed women. That is entirely men's fault. But just because some men leer doesn't mean that some women don't dress indecently.
Decorum is a real thing. It is out in force in places of work, bolted down by formal employment policies,..esp banks. And they are pretty specific too, they specify to wear dull colours, matching this or that, fabrics reaching a certain height etc etc. People who wrote these things are not dumb and they are necessary, please stop pretending otherwise. Outside, society will not explicitly lay down rules and say what is decent and what is not, but it is wired in our genetics somehow. Do you go to church in your beach shorts?
If you found a man drowning in a river and didn't extend a hand, you are not breaking any law, but then you are guilty of callousness and inhumanity. In a similar sense, if you don't have a sense of what is generally decent when it comes to dress, you are lost.

@quicksand

@alma, I do not advocate for policing of what people should wear. I am just pro- some boundaries. These, even loose ones, are good, especially when we have the good sense to enact them ourselves. To illustrate, albeit extremely, wearing a bikini to the regular office for example, should rightly make people (men + women) uncomfortable. In addition, this should not have to be spelt out.
Its not what you wear, but when and where you wear it. The bias I have grown up with says that a few places (and times) call for reasonable covering up. Like church.

I'll start by telling you an hadith, which says:

You see in life
Someone must have "Haya", which in this discussion stands for modesty, self-respect, shame, honour, humility, shyness etc.

In nature it is that feeling of "bad" and "uneasy" that comes with embarrassment.
This is comes out when person fears of being exposed or show disapproved for some unworthy or indecent behaviour.

So in a society where people believe in something
And if for some reason that person is not able to keep up with commitment then they will feel extremely uncomfortable and ashamed about this.
The reason is that he will have broken some code of conduct (for those who are religious, displeased God by breaking a command).

Unfortunately
What you see is genuine believers practising the commandments and you see people claiming the commandments and practising something else.

If we don't have some form of "haya" in us then it's obvius we do not believe in anything.

I can go on and on to proof to you
That "shyness" isn't something we want our youngs girls to exhibit so that they can be save (I'm sure you want your daughter to dress modesty).
It is not about women alone, but also good men should have, because this is an indication that they fear committing something bad if they follow their natural instinct.

This "shyness" is inborn
Look at young kids about 8 or 9 of age.
They have feeling of shyness and humbleness naturally happening.
They feel they need to cover their bodies from their mothers or siblings.

But you know what?
Ignorant people would tell such children "what are you hidding, what don't we know?"
These are the thinking Western culture want to instill in people's minds
So people who are affected by western culture say this to their children (pure, "untainted").

If as responsible parents
we take these instincts of feeling of shame and raise it responsibly, it will develop to a conscious responsible people who guide their lifes to doing "good" (you know what I mean, generally agreed conduct).

Some of you will frown at shyness and humbleness
Saying this is a weakness or lack of confidence.
But in real these are qualities of dignified, upright person, who's aware of their actions and their responsibilities in life.

Luckily in the house of Islam
Haya is responsible for making one to avoid something distasteful or offensive.
It keeps that person from neglect of the other person's due rights (Ok I know you will say which rights, but I'll simple say a society where there's no code of conduct, then there is no right)

The problem is not what women wear. It’s what men think." a tweet from @Sunny Biddra