Everyone has someone that they are completely incompatible with on many levels. One problem with sperm banks is that the woman doesn’t know the human being behind the sperm. That guy could be the most incompatible person in the world, and she wouldn’t know until having a child by his sperm and ends up have a very difficult time raising the child.
Certain human traits are genetic. For example, how hyper someone is can be genetic, how quickly they put on fat can be genetic, the color of their eyes, hair, what types of diseases they are predisposed to, etc.
If you’re a super laid back person, and you can’t stand hyper people, and you have sperm by one of the most hyper people there is, chances are good that you might have a baby with an extremely hyper demeanor who drives you up the wall all the time.
You’d be surprised how many personality traits are actually genetic.
I have three children. They are all very different, but they all looked similar when they were babies, their resemblance was huge. Now that they are older, they have much more unique facial characteristics. Personality wise, they haven’t change much since they were first born. The first child was born with a very strong sense of self and was very quick to express herself and these personality traits have not changed because they are genetic. The second child was born quiet, more thoughtful, and these traits also have not changed. The third child was born with a very happy outlook on life, not taking things seriously, and never in a rush, and that has not changed. These kinds of traits were born-in.
If you select a mate after living with them for a while and finding them agreeable, you’re more likely to have children that are compatible with you.
While many personality traits are learned, some are genetic. Anyway, this is something to consider when selecting a mate. This is why people have certain “types” of people they find attractive and can get along with.
I believe when selecting a mate you should look for everything from looks to personality to health. While looks can be seen in a photo and you can have a record of the person’s health, to know their personality requires intimate contact with that person and that cannot be known by simply looking it up in a database. Personalities are vastly complex, and certain levels of personality are clearly genetic.