Some Species Get By Without It
Some very successful groups do not reproduce sexually every generation, these include aphids, parasitic wasps, mites, certain crustaceans, the majority of vascular plants, etc.
A diverse collection of species never reproduce sexually; the whiptail lizards Cnemidophorus sp., certain gekos, the stream fish Pocelliopsis sp., the common dandelion Taxacum oficiale,
At Least One Entire Phylum Never Reproduces Sexually, the bellidoid rotifers (small freshwater invertebrates) never reproduce sexually.