Well there you go then.
I can't say for sure, but I'm going to ask you to consider a possibility: either consciously or not, you have a hiring process that filters for "people like me". For instance, if your team was interviewing a fat person, somewhere in the interview process either you or the candidate would get a strong sense that they wouldn't "fit in" or they wouldn't be a good "cultural fit".
It's no skin off my back whether you hire fat/unoutdoorsy/introverted people or not, unless I'm applying to work at your shop, but it seems like you're deliberately creating a rigid monoculture, and rigid monocultures are prone to groupthink. You're doing everything you can to squash diversity (not in the "women and non-white people" sense, but in the "people who genuinely think differently" sense). If you do that enough, then even the people you have will suppress any "heretical" thoughts they might have. Maybe the gains in cohesion are worth it for you, maybe not; I have no way to tell. But it frightens me a little when places deliberately design themselves to induce groupthink.