Speaking from personal experience, finding the right relationship can be HARD. I recently came across a rational take on finding relationship partners, much of which really resonated with my experiences:
http://waitbutwhy.com/2014/02/pick-life-partner.html
http://waitbutwhy.com/2014/02/pick-life-partner-part-2.html
(I'm still working my way through the Sequences, and lw has more than eight thousand articles with "relationship" in them. I'm not promising the linked articles include unique information)
Somewhat related:
Marriage Won't Make Sense When Humans Live for 1,000 Years, by Zoltan Istvan
http://motherboard.vice.com/read/marriage-will-make-less-sense-when-humans-live-for-1000-years
I have to take a hard exception to some transhumanists' advocacy of "sex robots," "marrying robots" and similar abominations. Istvan does that in this piece.
Young men need to get into sexual relationships with women "organically," by which I mean that the women feel attracted to them, as a necessary part of men's healthy personal development. Which goes to show why having alienated sexual experiences with prostitutes don't get the job done. A prostitute can teach a man the mechanics of sex - or so I've gathered - but she can't teach him how to have these experiences with regular women. Having these organic experiences lead to the development of skills which don't exist in isolation, but instead play a role in knowing how to deal with women successfully in the rest of life.
Yet the introduction of passable sex robots would sabotage this process, and it would leave a whole generation of young men psychologically stunted. This seems obvious to me, but apparently not to the people who publish propaganda about the wonders of giving men artificial ways to jerk off, as if we have just undergone a cultural transformation which holds that most men don't deserve sexual relationships with women any more, so they should just abandon that aspiration as an unattainable fantasy, plug into these machines and leave women alone.
I can understand the appeal of this scenario to, say, some of the incels and MGTOW's. But Istvan has a wife and two daughters, so he clearly has the experiences and skills to know the difference. Why would he therefore advocate something so preposterous and so disrespectful of a lot of men, other than the fact that he wants to keep his name in circulation, so he keeps publishing these trolls as "transhumanist" proposals?