For attractiveness: rate me threads on /soc/, reddit. There were some websites for it but I forgot what they are.

For the failure bit it's harder to quantify, it's a bit of a loaded term too because of how broad it is. To actually answer that you need to ask, a failure in what exactly? Just general life failure, like a failure to meet certain milestones? If you can more accurately define it, then you can get an idea of what the criteria for success is, then you can measure your experiences against that criteria.

Worthless is a bit vauge. Like worthless relative to what, what's the worth you're expecting to have or bring?

there are no empirical measures for totally subjective metrics

>>34106855
What a shithole.

You can always make whatever about yourself more or less true