However, we had a few guys on our team that really didn't like it. They left and I don't think less of them in any way. It's a different way to do things.
As for the "repetitive work" aspect: the most successful XP project I did was a collaborative sketching application using pen input with automatic shape recognition: somewhere around 2000 (when did MS put out those pen based computers??? -- We did it for their unveiling).
The problem though is the Agile Industrial Complex and "thought leaders" who have pushed this as a religion on the industry. I enjoy pairing, and the excitement of two minds working at the same problem in tandem is an experience to be relished. But give it to an Agile snake-oil salesman, most of whom gravitated away from programming a long time ago in favor of making money training others in how to program, and they'll wield it as a weapon by prescribing the only true way to work.
XP (in its traditional sense) doesn't scale past 8 developers anyway. Anybody selling you XP for a team of 500 is someone to be wary of ;-)
There are pains and giving folks the opportunity for change/rotation is refreshing.
Software is a team sport, its a weak-link game where we must communicate and empathize in order to see clearly (often past our own egos) in order to pull one-another up.
I was fortunate that good pairing hygiene was a focal point. Without that it can be disastrous mentally and ruin the experience for everyone. It turned into a highly collaborative sport at that point.
I am a hugger naturally but when I run into those pairs I went through the trenches with, it is a brother/sister hug. Best time of my life.
The kind of "pairing all the time" kind of XP that is being preached is similar for programmers. It also works for repetitive work - building yet another web application - at scale, not at scale, not much of a difference. But programmers often get into the job because it is an inherently creative field. There is nothing like this kind of XP to suck it all away and leave them disillusioned about the craft until they escape and find a product role or even a consulting company with more empathy and kindness.