I never bought evolution as a explanation either. Mostly because I thought (as a young child) that if new species do come into being over time then I should be able to see one now or somebody should have.
I remember the teacher telling me it takes too long and we wouldn't notice. And the unspoken reply was "bullsh*t, you might not notice, but I would and any even half competent farmer would".
And in spite of all that fine breeding and herdsmanship, animals revert to the plodding main in just a few short generations of unsupervised crossings.
I just figured if man couldn't create a new species by design then nature certainly couldn't do it by chance.
new species of bacteria and viruses have emerged in your lifetime.