agree that it's an individual decision....and it's a very curious thing.
it totally confuses me...this morning Jarv (entire) and his mate alfie (working cocker, neutered) were on their walk and met an entire girlie lab - Jarv sniffed and wandered off to find more interesting pheasant smells while Alfie tried to hump her....
we have Fudge (entire girl) to stay quite often, and Apple, (entire springer girl) and Jarv has not tried once to hump either - when we meet Alfie on walks, he always has a go at either girl
When I was walking Claire's Mocha, Jarv ignored her (she was having a phantom pregnancy - Alfie and another neutered boy did not ignore her....
)
In this instance I would say that neutering was the right decision for Alfie
If i did get a bitch I would spay her, on balance to me the medical risks seem higher than for a boy. I do detest checking Jarv's bits, but at the moment there's no issue in him being entire.
but.... Never say Never
Jarv has been around a bitch in season (one of those walks where a bitch bounces up to you offlead and shoves her bum in Jarv's face and you get from the owner 'oh by the way she's in season!') and yes, he was keen, and it was very frustrating...for him and us (as he was unsettled and whiney for a couple of days).
We'll see what transpires. We are very very careful, you just have to be with an entire dog.