Relationship Needs.

Before you read this post, please note that I'm a passionate, motivated and idealistic man.
Still, after nearly 20 years of marriage and 16 years as a marriage counselor, I'm wondering how realistic it is for one to expect that all their relationship needs can be met by their spouse, or any one person.
With this in mind, one's left with the question of what constitutes "good enough".
That might sound like settling, though acceptance might be a more useful point from where we can focus on what we do have versus what we're missing.