We're often looking to prove a hypothesis, or more aptly, a deeply held belief, as opposed to just letting the data tell us what's going on. That's because we're all biased in one way or another, and that's not a bad thing, but it should color how we think about expanding our worldview.
What's more, there's no political leaning when it comes to people undercutting answers before they ever hear them. That happens on the left as much as the right.
We can find proof for anything, but is that really the point?
Only if planting your feet in wet concrete sounds promising.