It's certainly something to think about but ironically, our kind may be better adapted to casual, no strings attached relationships. The reason I say this is because regular relationships requires so much emotion, and talking and caring, and overall a lot of socially exhausting work. I know that at least for me, I don't want to be forced to constantly talk to a partner everyday, be forced into friend or family activities, have drama and all the other social things that comes with being in a real relationship. Obviously with casual, it's just sex and the best part is you can keep your distance, you don't have to talk everyday, there's no drama and you can see each other whenever you both feel like it. It's not like you are obligated to care all the time. It's something to think about for sure.
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"The less I know about other people's affairs, the happier I am. I'm not interested in caring about people. I once worked with a guy for three years and never learned his name. The best friend I ever had. We still never talk sometimes."