I would like to try and reason with you evolutionist.
If by your theory over time things get better and through natural selection we pass on things that would better help us survive why did we lose certain abilities that would aid us in survival.
Examples, superior land speed,superior eyesight,superior strength,a superior sense of smell ?
Traits can be lost for a variety of reasons. You use it or lose it. If we had no more need for better eyesight to survive, we wouldn't continue having them. The reason is, if something like that isn't being used, then it isn't worth for the cells to continue to invest time and energy to develop such biological structures but also maintain it. Cells have economies, they are not post-scarcity economies. They have finite resources and time to work with, so they must spend it wisely and accordingly or else the organism they make up won't survive.
To be honest I'm pretty sure humans never had any of those traits, particularly all of them at once. Not to mention, they are relative, and at that they would have been relative to the nearest predator. The larger point still stands, however. What we do have that separates us from the rest of our cousins is a far superior brain (which are enormously expensive in terms of cell economies) and thumbs.
Not to mention such subjective terms of traits raise questions like: superior to what? You only need to be better at surviving, and procreating.
Would these not be abilities that natural selection would have kept in our gene pool to aid us in survival ? but yet these abilities were left in the animals we evolved from would this not be evolution in reverse?
Well, I'm not so sure humans had any of those skills, so the question is fairly irrelevant. You don't seem to understand how something can lose a trait.
Let's say you had good running skills, and you could outrun a predator that was also good at running. If that predator dies off, and you don't need to run at a high speed to run anymore, are you going to keep that trait? Nope, you won't. There's no need to devote the resources to develop and maintain the muscles and other associated structures that allow you to run so fast, if there isn't a reason to run that fast anymore. This will happen over time, as previously you had to have good running skills to survive, but now that isn't required, so those that couldn't run, will now survive and procreate.
It's a pretty generalized and basic example, but that's how losing a trait works.
Is it rational to believe in evolution that evolution would start from small to large why do we we see it go from small to very large back to small is this evolution in reverse or macro-evolution ?
Evolution is change in organisms, and that change is in terms of survival. One of the silliest and most annoying lines of thinking is assuming there are more 'evolved' forms and 'un-evolved ' forms. In nature, it isn't about a linear progression of better and better organisms each one better (which is a very subjective and human term) than the last. All that matters is survival and how a mutation helps (or doesn't help) an organism survive. A gaining of a trait is not automatically positive and a loss of a trait is not automatically negative. What constitutes that is the degree it allows the organism to survive.