Just as I willingly surrendered my privacy when I was screened for a Top Secret clearance in furtherance of my protection and defense of the U.S. Constitution as part of the USAF.
Do you think that there is no probable cause to collect DNA identification data from convicted felons?
The people of the State of Virginia disagreed with you and passed legislation to do so.
Good for you. This is not about what you gave up for your clearances, nor is it about convicted felons. Average Joe citizen might value his privacy both medically and legally, but then by your reasoning it would not be a stretch to put him in the database because there’s always the possibility he might be a felon in the future.