Same people can be found on dating sites - semi attractive low 40's single women who want to meet a guy:
* That lives within 5km of the CBD
* That has these specific degree(s) / qualification(s) / certificate(s)
* That makes $xxx,xxx income based on their employment expectations
* That must have this body type, hair type, eye colour etc
* That must be this minimum height
* That must have a car
* Than must be of a certain religion and ethnicity
* That must be totally single, not separated, divorced, no kids
* That must be older than me and also want kid(s)
But... it's certainly not their fault they are single - they just haven't met the 'right' guy yet