What is a disadvantage of sexual reproduction?

One disadvantage of sexual reproduction is that it requires the fusion of two different gametes (sperm and egg), which can limit the genetic diversity of offspring. This can be problematic if the parent organisms have limited genetic variation, as it may make their offspring more susceptible to genetic disorders or environmental changes. Additionally, sexual reproduction can be more time-consuming and energy-intensive compared to asexual reproduction, as it requires finding a mate, courtship behaviors, and the production of eggs and sperm.