Never. Literally waking up to the same person, not to mention having sex with them, day after day, year after year is a truly disturbing thought. Never having a first kiss from someone new and being forced to deal with the archaic concept of monogamy- omg if there is a greater Hell on earth, I don't know what it is.
If this was my only choice in life, I would rather not live at all. That's how much I am opposed to the institution of marriage. It doesn't work long term either, which explains why the divorce rate is sky high. My bio father has been married a bunch of times and he's still miserable LOL.