"No one's making anyone take part in any ride that they don't want to so, no, you don't have to pay for the pleasure and yes, you can just go off and pedal anywhere you like."
This is the crux of it. Mostly I'm an anti-social rider (I've written on here about it before). I like riding on my own, choosing my own route; changing it if I want to; stopping for pictures; deciding to go up a certain hill; deciding to avoid a certain hill. Even audaxes I just find a bit 'prescriptive'.
Converesely unless something is arranged I find I probably don't do the long rides as much, and as my brother and I have sort of agreed to try and get on the Etape du Tour next year I need a spur to do more long rides and so will likely get back to audaxing.
I've done Pedal for Scotland twice, thoroughly enjoyed the first year in the pouring rain; didn't get on with it so well the next year when the good weather meant a LOT more riders. At that point there wasn't the sportive ride either so the club riders after a time, who hadn't secured an early start, came barging through at times. Which all felt 'purposeful' rather than a relaxed meander that I usually aim for (whether it's a fast or a slow meander).
Mel rode it with me both times, and her dad the second time as well, neither of whom had done anything like the distance before, and it just showed what is achievable if you're moderately fit - would they have done, or even tried, the distance without it being organised? Possibly. I did a couple of 40 mile rides with Mel, but they were kind of tied in to training for the big one as well.
Anyway, this waffle is all a long-winded way of saying charity-fatigue is understandable (more getting asked by friends and colleagues almost every week for sponsorship for some event or other - that can feel like an obligation despite me having various direct debits straight from my account to some charities I have specifically chosen as ones I would like to support); but when it comes to taking part or not, well, there isn't a gun to anyone's head.
What all of this has done is made me want to get up early at the weekend and go for a ride before the world wakes up.