I think the end of a marriage is the same, no matter who you choose, the result is the same, the important thing is the mentality, life always has gains and losses.
I think otherwise, the result aren't the same if not, we would all be divorcing our spouse after a period of being entangled or, we'll all not know what divorce is because all our spouse act in similar ways.
Most spouse are a means to our unending joy and happiness, while some are a means to our end hence the reason for separation.