It can, but the vast majority of marriages are mismatched, so no.
Nothing equals “happiness”.
Some things may lead to happiness. But happiness is an extremely short term event. Its a peak event.
Contentment is a level of existence that people really need to shoot for. Contentment isnt a quick fast peak moment. Contentment is a state of being.
Next month is our 50th anniversary. Married my highschool sweetheart 4 months after we graduated at 18. We did it right the first time and we waited 4 years to have our first of two daughters.
Life is what you make it. We’re both retired and enjoying life.