Do you feel like there's a good way of measuring whether a relationship is worth saving or not?
kinda depends on what you're looking for in a relationship. all relationships take some level of effort and compromise to maintain. however you measure the "value" of a relationship, it has to at least be better than being single to be worth the trouble. I'd say a relationship is worth saving if a) both partners agree it is better than being single and b) both are willing to take on a roughly symmetrical share of the effort and compromise.
There used to be pro-familly policies in USA that basically assumed that is male is in the house, the male is responsible to be breadwinner. That meant that if there was make, woman would not get social support money on her nor on kid.
They were even quicker to kick unemployed male out due to that - his presence meant they risk support. It sucked, imo.
We've entered a transactional phase where your partner is supposed to show up perfect, well-adjusted and no work on your part for a healthy relationship is required. Not working? Ditch 'em and try again. That's the other extreme, sort of the exact opposite of staying due to social pressure with someone you hate and makes you unhappy, and it's also unhealthy.