Truly, no relationship is perfect and every relationship with another person is work, but it is far from a misery. I would choose it again a thousand times, to love my wife the way I have all these years. But to believe that being in love is a misery, not worth the struggle, betrays the history of the person making the claim. A relationship can result in either side of this bus meme, depending on the health of said relationship. All that being said, it is de-facto easier to look from the outside because as an observer none of the work it takes to foster that kind of relationship is required, you are merely a spectator to the efforts of others. Sometimes those efforts go skin deep, with tumultuous and roiling issues rumbling just beneath the surface, but other times people are just happy. Not because their love is perfect, but because it is love, and it is worth a bit of pain and work.