Nobody, married or single, is free from the possibility of one day examining their life and wondering what meaning it has. That is good surely. A husband and kids can distract you from that question from longer I suspect.
I am single so I"m not imagining the life of a single woman as anything, never mind regarding it as a pitiful life, I"m living it and looking forward to when my DC are older and I have a bit more freedom. I'm long term single, and comparing is futile (a pursuit for the ego), but I think I'm more content with my life than is average (all marital statuses included).
I do not judge FWB arrangements but I would argue that they're meaningful. If you think that the OP sounds like this is the answer she's been looking for, we took different things from her OP. She doesn't sound like an FWB arrangement is what she's looking for.
She sounds like she has the freedom in her single life to ask herself, what next, what choices do I have. She's looking for inspiration, so @stevie69 there's no need to say ''you my friend are not me''!
We are all just posting our own thoughts. Thought that was a given.
I'm single and in my late forties and my life is not shit so, I"m sure nothing about my posts implied that I thought single life was shit!
I dont' feel that it is so why would my posts be inferred that way.
I offered advice for somebody who has yet to get to that place.
I'm very consciously working on becoming a braver more sociable person so that I don't need somebody to go places with.