10 years from now a new government is voted in, and they severely dislike people with your political views based on some online comments you made in 2016. They could do anything from just making it really hard for you to vote, all the way to getting you fired, pulling your mortgage out from under you, etc. etc.
You really have no idea what a future government or corporation will do with so much data about you. Based on history, I think it's best to assume it won't be good for you.