What marriage is for?

She doesn't seems like she respects to aspect of marriage because she always tried to explain or put a definition to word "marriage". but i think like love, marriage is something that cannot be defined clearly or cannot have logic in it. Therefore this caused me to think that the writer and i are not having the same ideas about the marriage. however she has really good points on supporting same-sex marriage. her observations and comments on both normal marriage and same-sex marriage helps reader to understand the situation in different ways.