A little data is always better than no data. Because no data is the realm of opinions, hearsay, gossips, and past experiences.
A lot of data is sometimes better than a little data. Because a lot of data can be confusing, irrelevant, misleading.
A good amount of data is difficult to strike. Because when you start getting data, you want more, and that’s when you end up with a lot of data and the problems from the paragraph above.
The point is that data is useful and should be used, as long as, at some point, you can say “enough!”.