On a less trivial level, consider what peer pressure looks like in the society without the privacy of your own thoughts. What if that society, for example, turns out to be religious (like the current societies)? Are you ready to be part of a shunned minority?

I think about this a lot, but my expectations are radically different from yours. Peer pressure depends critically on maintaining the illusion of a uniform mainstream position. The awareness of just how much variance there actually is in real populations tends to destroy its effectiveness.

I expect a telepathic society to experience much less in the way of peer pressure than my current society, where 90% of the population can claim to believe X, even though they really don't, because they see that 90% of their neighbors are claiming X and they don't want to be singled out for defection.

But sure, if I'm wrong and the telepathic society turns out to be the kind of narrow-minded thoughtpolice scenario you have in mind, I will be surprised and regret my choice.