Evolution wasn't testable for decades after Darwin's death. Continental drift's predictions are still awaiting results that won't come for another few thousand years. Newton's gravity took hundreds of years before it could be directly tested.

All those theories were merely fitting to data. Do you genuinely claim they were "unscientific"?

I repeat: the desire to reject a theory for aesthetic reasons is the "faith" side of this argument. It's OK to prefer a better theory if you have one. It's not OK to sling insults at the people who point out that it's the best theory we have.