You can't really engineer a relationship. Approaching them with an engineering mindset is wrong and misleading in my view. That's why usually we let feelings decide what should happen and take risks.
If you're not a-sexual[1] then you must be attracted to a certain type of woman. Usually men are attracted to sweat, good looking, smart, responsible women. At least that's what works for me. But that's only the tip of the iceberg. Relationships are marathons.
When you live with someone, the relationship goes on another level. You start noticing things that you like and things you don't like. Your partner does the same. There are also external factors that will affect in ways you can't tell: Will your friends and family like her? What about her family? etc.
Believe me, a posteriori, every relationship seems like a poor choice. We usually focus on what we give to our partner but rarely contemplate what we take back.
IMHO the bond between a couple must grow organically and only then been taken care of. You need to fall in love with someone, respect him, etc. To the very least you need to have strong feelings towards your partner. Otherwise, there is no way in hell that I see a 37-year old male going through a relationship with the solid foundations that are needed to get through the relationship happily. As most married people will say, it's not always sunshine and rainbows. I dare to say, it rarely is past the first 2 years.
Of course if you want a relationship that will end up in a divorce after 3 years, then I guess, things are a lot easier.
Relationships are not simple, nor static. Indeed IIRC Einstein or Tolstoy said that relationships are the most complicated thing I've came across. There are too many variables. This means that there's no perfect deal when picking up a partner. I dare to say that it's very hard thing to predict how an individual, male or female, will change and adapt to a relationship. People seemingly different, get fine, while others who seem perfect for one another do not.
Of course there are very poor deals, e.g. You shouldn't pick a drug addict or alcoholic partner. On other what if your partner had a predisposition in alcohol that you never knew about and suddenly ends up being an alcoholic. You give up, or keep on hanging? What do you do? A movie[2]!
I don't know. I can't stand being with someone who wouldn't give everything to me. I need to take everything and give back everything.
ps. To the brave who reached the end os this comment: hopefully I didn't sound like an idiot in this post. If I did though let me know, for future reference, I'll try to change my wording or keep quiet :-)
[11: AFAIK about 1% of the population is a-sexual meaning that it doesn't feel any kind of strong attraction to either sex.