That is the case in "wealthier" countries due to girls having more chances to "succeed" in life and more rights and equality to men! but In a third world country where are few or in some countries no other options marriage is their only way to "succeed" in life. They look at it as "Mom I got married, you should be proud - I am, I am sooo proud of you!". In countries where is too much corruption, low education, low women rights marriage is booming, but the sad part is, 80% of it isn't because of Love...