Thanks for the feedback Metrik. I think most of us here can relate and say "been there, done that". I have posted on the subject of getting too emotionally involved only to have my tiny heart broken when she ghosted and moved on. I REALLY try not to do that anymore, (with limited success!)
I agree wholeheartedly with your conclusion to never send money or gifts in advance, ever. Even if you can afford it, sending them $ in advance simply muddies the already turbulent waters for those who come after you. The girls who ask for $ in advance keep working the scam as long as it pays off. If every single guy on SA simply quit falling for those requests, I think the number of requests would decrease. Don't feed the trolls!
Finally, I want to comment on the PPM vs Allowance issue. Any girl who says "I'm not that kind of girl" is really exposing her misogynistic disdain for other women of the professional sex workers ilk. OK I guess I get it. But the problem with allowance is that it ALWAYS leads to feelings of frustration and entitlement on the SD's part, as you so eloquently described. And it also leads to feelings of obligation on the SB's part. Major buzz kills. But with a simple PPM system, you both know that every time you get together you both actually want to be there! Much nicer vibe.
Oh and one last thing: language matters. All of us here use the Pay Per Meet phrase and we know what it means. But I NEVER use it with SBs, even if, no, especially if, they used it first. I say Gift Per Visit. I want it to be clearly understood that I am not paying them for anything, and they are not getting paid for anything. Instead, we are consenting adults who enjoy an affectionate, clearly defined relationship. And it's my pleasure and privilege to give her gifts, gifts which are not payments for anything. If a SB cannot get behind this way of looking at it, I'm out.