You are mistaken. I think evolution is the most convincing current explanation for the diveristy of life on the planet. However,
- I do not know if it is true.
- I have no proof that it is true.
- I would be surprised if it were shown that it was not true, but not excessively so. (In many ways I would delighted that a whole new field of investigation was necessarily opend up.)
- So I most certainly have no belief that it is true. That, for me personally, would be arrogant, presumptuous and dumb.
- However, I have no meanigful doubt that evolutionary theory is currently the only explanation for the diveristy of life on the planet that is supported by a vast body of evidence. Recognising this demonstrable fact requires no faith at all.
That is an argument from incredulity. Moreover, it is an argument based upon a strawman description of evolution. If you think evolution is wholly dictated by chance, you simply have not been paying attention. Chance has a role to play, but chemical and biochemical constrained processes, selected by the natural environment are of equal or greater importance.
Evolution is a perfectly satisfactory explanation to many Christians as to how the Creation metaphor decribing the apperance of life, as presented in scripture, was achieved.
Faith can be applied to many things and if one is foolish enough to choose to believe that evolution is 100% proven, as we currently understand it, then one would be employing faith. For those of us who consider that the explanation may be any of the hundreds of creation myths, plus implantation by aliens, existence within a simulation, and others that we have had no hint of as yet, then faith is irrelvant. It's just that all these alternative explanations currently have little or no evidence to support them, whereas evolution theory has more supporting evidence than one could read in a lifetime filled with 14 hour working days.