yoyo,
I agree marriage is about trust, commitment, love, etc (all that stuff in the Ketubah). That’s is what I see as the “positive”. That’s the glue that keeps couples together. OTOH, there is stuff that un-glues, like all the stress, most notably raising children (which includes the parnassah needed).
Speaking of commitment, raising children, IMHO, takes more commitment and sacrifice than marriage. Marriage is (or should be) a two-way street, whereas with children, you give and give. Often without a thank you, and sometimes you get hostility for all your good efforts.