If that relationship included somewhere along the lines "in sickness & health, until death us do part". Then yes. What's the point of making a commitment if you don't stand by it? The exception would be if there was abuse or infidelity.
I think also that we sometimes forget that a relationship is about two people, not just whether my own needs are being met. Likewise, I need to accept sometimes that the other person will not be able to meet my needs, because a) like me, they're not perfect and b) again, it's not "always about me".
In line with the vows I recited on my wedding day, I prefer to think of the commitment as just giving, then any "receiving" I get is a bonus and something to be pleased about - it means I'm disappointed less often (I guess this could also be viewed in terms of forgiving the other person for not being perfect?). Of course, I'm lucky because my wife has the same attitude. Hence we are generally always pretty happy with each other :-) Rather than being disappointed with each other when we don't meet each others' needs, we are just "neutral" toward the other. That way, when she does something nice (or "just" meets my needs), I feel great and want to do something in return. This is different to feeling you are owed something (eg. "they have an obligation to meet my needs - so if they do, I won't complain, but when they don't, I'll feel short changed").