Love, gifting, shopping, eating out, spending for/on special occasions, spending just because relationship is going nowhere, spending to change her mood, birth control for years and then fertility center. child, bigger home, bigger car, another car, ceremonies, parties, competition..

followed by

marriage counseling, private detective, therapy, lawyer, family court/divorce.

Thinking of it now, I never had the will from within to engage in any/all of these activities but was going with the flow than conscientious decision making.

There's a whole industry making the female species survive and thrive based on your one (erraneous) lower-head driven decision.