The English title for the article with the topic of “孤独是人生常态” is “In孤单， the commonality of life is.”
In Chinese, the title for this article could be “人生常态是孤独” (rén shēng zhòng shíduì jiànhé zài 孤独). This title emphasizes the commonality of life, especially in the aspect of loneliness, as one of the most common experiences of human beings.
In English, the title “The commonality of life is loneliness” could be a better translation, as it accurately captures the idea that孤独 is a natural part of human life. This title could also be rephrased as “In孤单， the quality of life is.”