Parents and people around me are questioning why I turned down Harvard for Stanford. Do you think I am missing out on anything by not taking Harvard? I feel a bit bad about missing out on the "old world prestige" that people keep referencing where I live; it seems Harvard has a lot more of that than Stanford. I am in the DMV area, by the way, if that matters (maybe that is why there is a bias for Harvard?).
I know both are great, but I am having second thoughts, concerned that I could have made a better decision. Let me know what you think.
Sure. Conversely, if you'd gone to Harvard, you would have missed out on all that Stanford has to offer. Sometimes you get multiple options and have to turn down all but one of them.
It sounds like these are your parents' friends or something -- do you care that much what they think?
Stanford is an absolutely fantastic university. You made a great choice (I would have said the same about any of the universities you mentioned). Try not to second guess yourself, which is easier said than done. Congratulations and good luck.