What are disadvantages of sexual reproduction

The following are the disadvantages of sexual reproduction:
1. Sexual reproduction requires a male and female partner, without the two coming together reproduction can not take place. Getting a partner might be difficult if there is disparity between the number of males and females in the area.
2. Sexual reproduction takes time and energy. The process is labour intensive and time consuming. For example, the male animal needs to court the female animal and build emotional connection before copulation can occur. Not all copulations are successful at the first attempt, some animals may have to copulate several time before fertilization occur.
3. Sexual reproduction reproduce fewer offspring than asexual reproduction.
4. Sexual reproduction can prevent favourable genes from being passed to the offspring.