As neither ideology is about securing love (doesn't believe in love) and takes an approach that is purely transactional, devoid of true emotion and based solely on what the other person can provide (cooking, sex, children, security, money etc), how many TRP/FDS people would tick every box on the sociopath box? Now before everyone decides to get offended by this, deliberately take everything out of context, turn this into a "you're just saying men are bad (but skipping over the fact I mentioned women for some reason)!" or just read the title and assume it's about you: this is not being framed in a negative light. If anything, it's a neutral light, it's not bad nor good just an observation I've made here. Such people would benefit from the arrangements I mentioned, likely thrive with them actually in the long run if both people keep up their end of the deal. However, I feel this would only work if both people were sociopaths or have sociopathic leanings, should things end there would be lingering feelings or a sense of loss.