Except that there are clonal species of everything from bacteria and fungi to plants, invertebrates, and even vertebrates (obligate and facultative parthenogenesis - https://www.biologyonline.com/dictionary/parthenogenesis). Evolution favors what works, not just one "strategy". Radical recombination, like what happens during sexual reproduction, isn't required for survival, and is obviously not be the optimal way for all organisms to get alleles to the next generation...