>>reedf1+db4
This is absolutely going to lead to the black mail of people in both the private and public sector. Ruling parties are going to have access to this information and will use it to force votes. Intelligence agencies will do the same. On top of that its only a matter of time before you get a Tea app style leak where this data was simply not secured. Forcing people to identify themselves before engaging in their sexual peculiarities is a recipe for disaster and the rationale behind it is weak at best. Its about control, nothing else.
Note: Forgot to add, this is going to give some low level data or software engineer access to all of your darkest secrets and what is to stop them from using that to blackmail you? Some guy is going to ring up their local millionaire and say "I see you are into X, give me a 100k or everyone else will know as well" There is no end to how bad of an idea this is.