The theory of the evolution of life forms was proposed as a possibility over a century ago. Since then scientists of many different disciplines have been testing the theory by applying it to the physical world they study to see if it functions (produces predicted results). And for the most part, is has. It has had to be amended; some things added and some things dropped, but at it's core, it has remained a functioning theory of how life has evolved to be what it is, today, on this planet.
This, however, does not mean that it is a "conclusion", now, and no longer a theory. All it means is that it is what it is: a theory that has thus far shown itself to function as valid within a wide array of physical conditions and circumstances. In fact, no theory in science ever stops being a theory. No theory in science ever becomes a "conclusion". Because history has shown that when that happens (occasionally even a quorum of scientists have fallen under the spell of a presumed conclusion) it tends to create a huge impediment to the scientific process that takes years and much effort to finally get past.
The fact that any one of YOU may have concluded that the theory of evolution is no longer a theory, but is now a fact of reality is NOT SCIENCE. It's just your opinion. In fact, it's your opinion masquerading as science. Which makes it, "pseudo-science" ... or in this instance; 'scientism'. And the fact that I am pointing this out, and some of you are fighting tooth and nail to deny it only serves to further exemplify the cult-like nature of 'scientism', and of it's willful ignorance of what actual science is, and does.