Yes, all attachment leads to pain. And I'm sorry, but it really rubs me the wrong way when people make sweeping generalisations about everybody else's lives when it comes to these kinds of things. For some people, it's worth it because the pain is outweighed by the pleasure while the attachment lasted. But not for everybody, and it's certainly not true that life without the pain of attachments is automatically less worthwile. If it's true for you, it's true for you, but remember that there are entire religions built on the concept of escaping attachment - there are absolutely no universal truths about this.

Attachment is very hard to avoid, and so the pain is almost inescapable. That doesn't mean that the pain is good or makes life better. For some people, yes. But not for all people, and that doesn't make those latter people empty or non-human.