Why cant we alter evolution

With todays modern genetic findings and technology, should we allow species on this planet, including humans to be artificially modified to bread new speicies? or advancements ?

why wait millenia for evolution to create human or animal advancements?

am i the only one that can see the potential of flying horses? or humans that can fly?

i know at first it sounds daft and knowing i can get abit nuts sometimes, but as other topics i started in here i'm being serious.

who knows what wonderful creations could be possible, also the practical side of things could be advantageous to the planets survival, if we all flew horses instead of cars then a massive amount of industry would be cut.

[removed links]