It's funny, I have been on forums for many years. Clear back in the old BBS Bulletin boards. In all of this time, I have honestly never seen a forum with so many necro threads as here
My wife had fuck buddies in college while I was at another college and only saw her once or twice a month. She made sure they knew that I was the love of her life and they were just having fun together. If it started to get complicated, she dropped them and found another fuck buddy. After two years like this, we decided to make our relationship exclusive again and the fuck buddies lost their privileges.
I had two from 18 to 23, one was complicated but the other was wonderful. She even brought me a girl once.
In my opinion, it would be great to have a fuck buddy with whom sex is available as needed (whenever both were available), without any social or emotional commitment required. But being humans as we all are, I fear either a social or emotional commitment would slowly creep into the arrangement, eventually making things awkward and ruining the "relationship".
I think being in the time of free love late 60's was a big help. I had hippie friends, never called myself a true hippie. But experienced free love. Damn I miss those days.
I think all people involved have to have a certain amount of emotional committment as friends but not a lot more. My two FWB's are friends first. I know about their kids, their health, their jobs. We have wine or beer together and catch up. Eat some good food. Yes, talk about sex and drop our clothes and play until it's time to leave. We also talk about our other sex partners and what they're like and what we do with them and sometimes we try new things with each other that maybe one of us has done with someone else. Neither of the two that I see have a bit of jealousy or even envy nor do I. When my latest FWB told me that the next day she was seeing another friend who licks her ass better than anyone, I wanted to know what he did that was so good and then I pulled down her pants and gave it a try. I didn't mind that she was seeing him the next day. We're fuck buddies. But we also talk about when she's getting her hair done, what I'm up to for the long weekend, the weather, her boyfriend, everything along with sucking my cock and letting me take a pic of it in her mouth. I'm not concerned about getting attached. These friends started out clearly being different than a lot of people. Maybe they're rare, but I have two now and have had some in my past. To be fair, I've also known friends who have become attached. Thankfully not with me but with others and I've listened to their struggles. So, it's a valid concern but one that, at least for me, has been easily managed.