How?
So... you enter a marital contract sanctioned by the government, for which 80% of all divorces are commenced by one of the sexes (females,) out of which one gender (females) tend to come out of with 55-65% of all marital assets (even if she doesn't work,) most often due to infidelity and you and people like you recommend you enter it thinking that giving her a foot massage and letting her condescendingly treat you like a 5 year old is going to prevent her from straying? LOL, ok. You should ALWAYS enter a marital contract knowing that it can come to an end at any point, regardless of your input.
Like I said in previous post, I had the misfortune of losing someone close to me due to infidelity (he committed suicide because he found his wife in bed with two other men). That got me to go into infidelity forums and became sort of a "keyboard expert" on the subject.
What I've learned is that 1) women now commit infidelity at much higher rates than men, 2) they commence divorce proceedings 80% of the time, 3) upwards of 7% of all married females get pregnant by the ex or any other male and then dump the child on an unsuspecting man (hence it is of utmost importance that you DNA your children for paternity at all times,) 4) most female infidelity cases (estimates of upwards of 75%-80% of all cases) are NEVER found out, 5) most females keep orbiters around even during marriage and actively recruit other men during the marriage, 6) a rather large % of these orbiters get promoted to "friends with benefits" sooner or later, 7) more than 70% of all infidelity cases are found out by the other wife and reported to the husband by the other wife (because men SUCK at sensing the cheating red flags) and 
if you married a woman with a personality within the narcissist spectrum, she WILL cheat. Sorry.
What I recommend men do is 1) set up strong boundaries, 2) NEVER walk back on a boundary, 3) enforce the boundaries at all times, 4) PAY ATTENTION. You have to start checking the phone when your gut tells you something isn't right. Don't get me wrong, you MUST treat your wife with dignity, respect and love, but once she starts doing things that directly contradict adherence to the vows, EARS OPEN/MOUTH SHUT.
If you're half smart and find out your wife is straying, knowing what to do can get you a MUCH MORE favorable divorce settlement. Cheaters hate it when you break the news to anyone, so using the cheating as settlement leverage, especially if she's in The Affair Fog, can really work in your favor because at that point the ONLY thing she wants is for the affair to continue and you to move aside. Don't get me wrong, her world violently collapses when she eventually comes to terms (the dopamine receptors shut down) with what she did (and they ALWAYS try to come back,) but that's someone else's issue at that point.
Girls and sons who have not been loved by their fathers seek attention once teens and adults to compensate for what they didn't have originally. Fathers either left them alone, or were distant most of the time and not encouraging them. Some even despised them which would shape their personality and the way they interact with others for the rest of their life. They are extremistic in everything they do, always looking exaggeratly for attention (Hello Goodrum), and have troubles adapting to society's rules, because they also have troubles defining their own identity and respecting authority and hierarchy.
Also boys who got picked on by others during childhood and adolescence -often sons without a father figure- try to compensate by lifting weights, to develop muscles and survive in ther male world. They're insecure because they're girly, childish, feminine having been raised by a single mom. They lift obsessively hoping it will transform them into men, to compensate for their lack of influence from a father figure that was not there. Unfortunately they can get as big as they can but it doesn't cure their insecurity and who they truly are, how they grew up being raised by a single mom. They're not as manly as other men whatever they do, and they often have a big lack of masculine presence they don't know how to balance, hence often being borderline homosexuals while trying to get their manhood back through various manly activities (MMA, cars, weight lifting etc.).
They are often the ones that, in order to get respect from other males, will go the steroids route to get even "bigger", attempting to cure their insecurity, but being natural not being "enough", they still feel "too small", insecure, amongst other males. The lack of a father figure also often means they didn't have guidance to continue studies and are often working shitty manual jobs.
