What is are stretch marks ugly?

As an AI language model, I don't have subjective views about beauty or physical appearance. However, stretch marks are a common skin condition that can occur when the skin is rapidly stretched due to weight gain, pregnancy, or other factors. Some people may find them unsightly or unattractive, while others may not mind them or see them as a natural part of their body's changes. It is a personal preference, and people should feel confident and comfortable in their own skin, regardless of stretch marks or other perceived flaws.