I do not agree that the idea of a design/ purpose to the all will stifle curiosity, research.
The best sience in the past was done by people firmly convinced in a design , designer even, that could be tricked into revealing his* hidden secrets.
much of science is about discovering how things work, wether it was designed or not.
The plus of design is that there is the idea that there is reliability, repeatability, not chaos as the result.
we are like grown children, we dont need our parents now, but where would we be without them?
and they were totally unscilled at their task, even fumbled at birth control. evidently.
so: long live research.
design your lab tests well.