as of right now I choose to play with the stimulation option off. There is not much incentive to keep it on unless you only have sex on the rare occasion. Plus, there are some perks that clash with the system like the sex streak one and some of the breeding ones. I'm guessing there will be a perk tree to go along with it in the future but right now it limits gameplay and since sex is like a good chunk of the game you are kind of handicapping yourself. Thats all my opinion so test it for yourself, maybe you will like the challenge such a system offers.
Looking forward to future updates, hopefully next one will be a Katz one. Kinda want to see if her escape plan is as disastrous as Tavi's.