[Photo/Pexels] 谈恋爱的幸福总是相似的，单身的原因却各有各的不同。国外问答网站Quora上有人提问：“大家单身的原因是什么？”网友们的答案幽默中

Singles are happy to be single, believe they're more open to new experiences, and in better physical shape than couples, according to a survey conducted by Harris Interactive. Survey results were released in honor of National Singles Week,