Failure and uncertainty are part of life, so I have no issue with those.
What would be "genuine" about the physical relationship in a box? A sentient, conscious being with autonomy and agency would bring uncertainty etc. right back no?
In a world where you have to pick, do you pick pursuing a close physical relationship, or opt for something far more shallow, but also much more certain and convenient? Or perhaps a deep relationship - with someone you share a lot of interests with, but don't happen to share a continent? Or something else entirely - like solitary entertainment?
In the perfect world of stated preferences, you don't have to trade those things off. In the real world, there's only this much time, money and effort you have available, and choices have to be made.
People with a lot of degress of freedom (wealth) seem to be doing ok with choosing actual physical relationships, marriages, etc. - why is that? (About 80+% of the richest 100 people are married, for example, and they tend to have quite a few children, too)?