Our children, from previous marriages, are 23, 20, 19 and 18. They are well rounded, intelligent, articulate, sex positive individuals who have been kept in the dark about our LS activities and choices intentionally. Would them knowing that we enjoy sex with multiple partners, complete strangers or any of the particulars benefit them in any way? Would them knowing that I enjoy sex with other woman help them any more than my knowing that they eat cooked carrots help me?
For our family, our willingness to talk about and our positive attitude towards sex were more than enough. Not exhibiting prejudices, displaying tolerance, compassion and empathy gave them everything they needed. If our kids choose the lifestyle, and it works for them ... great. If not, that's great too.
This is what worked for us. Parenting is hard work. What works for one family isn't what works for every family. Good luck with the hard decisions