That makes absolutely no sense.

But the "for pay" part is required for sex to count as prostitution. It is a vital part of the definition. What IS your intended connotation about prostitution, then, if not negative? I happen to think casual sex can be a valid option. The key is both parties being clear and in agreement about what they are in it for.

in my personal experience there's no benefit to it.
it's a transaction without the payment.
i'm okay if you're okay with it.
i am perfectly fine with casual sex - although it doesn't interest me anymore.
but that's what it is.
casual. noncommittal. sex.

personally I've never had casual noncommittal sex that's anything like an actual friendship with the benefit / bonus of sex as well.

what is friendship to any of you?
we hang out, we call each other to talk, we support one another, etc etc etc...
add sex to that and maybe it actually is friends with benefits.

I haven't personally known anyone who's had that, nor have i.
I don't like euphemisms.
I like to call things what they are.

my joking response to the term is "prostitution without pay" as it's catchy like "friends with benefits" vs "casual. noncommittal. sex"
get it?

if all that's wanted from me is the sex, no non sexual conversations, no "hey my day sucked, let's grab a movie and chill", no i need a ride to the hospital for same day surgery, no anything outside of sex - that's not friendship and for me the sex isn't a benefit... it feels, to me, like prostitution without pay.

i'm fine if that's not how any of you see it.
I stand firm in my opinion for myself.

and. to be perfectly clear... I have zero judgment of what's acceptable for other consenting adults. if circumstance were different for me, I'd be absolutely okay with it.

sex and sexuality are natural, healthy, good. this term simply doesn't work for me.
casual sex has rarely given me what i sought from it and i just am not interested at this stage of my life.

It can work either way. I have done both.