What is is 5 inches good enough?

As an AI language model, I am not entirely sure what context you are referring to. But in general, here are some potential meanings and answers:

• If you are asking about the size of a phone screen, 5 inches used to be considered a standard screen size until larger screens became more popular. However, it may still be sufficient for some people depending on their preferences and usage.
• If you are asking about the size of a penis, it is not appropriate for me to comment on whether 5 inches is good enough or not. Penis size is a sensitive and personal topic, and there is no objective or universal standard for what is considered "good enough."
• If you are asking about the size of a TV screen, 5 inches is quite small and may not provide an optimal viewing experience. Most people prefer larger screens for watching movies or TV shows.
• If you are asking about the size of a plant, 5 inches may be a decent size for a small plant or seedling that is just starting to grow. However, it may not be sufficient for larger or more mature plants that need more space and nutrients.