I do understand, James. My Evora has presented quite a few challenges over the last few years - nothing major really, but at times it was incessant - and you have to really love driving it a lot to keep going at times. Happily mine's all sorted now but it was a little touch-and-go whether or not I'd keep it and I'm totally in love with the car. Yours sounds like a lot of minor stuff honestly, but they all add up, like the saying goes: 'death by a thousand cuts'. It's a shame, but I do understand.
Just don't buy a Porsche; that will be 'death by a huge cut' such as an engine or gearbox failure......