Yeh, it's not like virginity, the organisations chasing this data don't live entirely off of new additions to their databases, the data is valuable to them when it's a constant flow so if you are interested in guarding that data and stopping it from being shared too widely then there's never a point at which it's entirely too late. It is worth noting that it's near impossible to maintain the type of privacy you might have expected maybe in the 90s, early 2000s but, if you succeeded in reducing how much data you give away even to some limited extent then you are successfully starving those that seek that data of something valuable. Information about you that's years old is probably not worth very much. It all feeds in to the machinery of this surveillance economy so I'm sure it's useful to some extent, but that machinery seems to be endlessly thirsty so it obviously needs a continuous supply.