Keeping pet insects can be ethical as long as they are treated with proper care and respect. It is important to ensure that their environmental needs are met, they have adequate space to move around, and they are kept in conditions suitable for their species. Additionally, it is essential to consider where the insects are sourced from to ensure they are not taken from the wild in a harmful way. Overall, as long as the insects' well-being is prioritized, keeping them as pets can be considered ethical.