There are things we all do that are considered private.
Because they are private, and we have a right to privacy, that information is valuable. What people do in private can be used against them and information used to harm them - to extort from them.
We have seen the case of the Ashley Madison leak where people committed suicide, and marriages were ruined.
But the UK government is trying to create a system that will put in the hands of companies the details of the private sexual preferences of a lot of the adults in the UK.
They are proposing a system of "age verification" for access to pornography web sites, and such a system can only serve, by some means, to associate a real life identity of an adult with a sexual preference.
That data will be valuable, and will be hacked or leaked, and there is no doubt about that.
And why? Well, to reduce the risk of children accessing porn. Even though the filtering of porn sites is standard on so many mobile and fixed internet access in the UK, this is a step to go further.
Personally, in my opinion, this is silly. Young children have no interest in porn, and existing filters, and safe search and parental controls, stop access. Older children, teenagers, will find a way to access porn regardless. There really is no need for any change in this.
I am lucky - I am not in any sort of sexual minority as far as I am aware, liking conventional straight sex, and watching porn of such occasionally. But a lot of people would not be prepared to say that, and a lot of people are "in to" something more controversial. For a lot of people their sexual preferences can be a financial or political level and create a lot of problems.
Why is the UK government so keen on such a system - who knows. From news reports it is MPs that may have the most to fear from such a system.
Of course, any such system, will be flawed, and foreign sites will ignore these new laws as proposed. Kids of any age will have no issue accessing porn. But adults - normal people - will have their sexual preferences profiled and logged and hacked and abused.
Not a law yet, but close - the Digital Economy Bill - it is happening now.