1) They all have legitimate accomplishments. They have USAMO/USACO medals, chess trophies, ISEF distinctions, National Merit Scholarships, multiple research papers, etc. Because of this they are all interesting people and have significant pedigree, even if some of them went to similar schools as me.
2) Almost all of them seem to be very photogenic and have wide friend groups who do expensive activities with them (flying, skydiving, Europe trips, skiing, traveling to Thailand, flying to Colorado for the weekend to hike, etc). Even when they're not spending money they're still doing cool stuff, like going to expensive company events or traveling in business class to events.
3) Their friend groups are also accomplished, highly pedigreed individuals. Meanwhile I moved to a new city without knowing anyone now that my intern cohort moved to better and more impressive companies.
They all have the money to do anything they want without any real fear, whereas I do not. I don't have their wide friend groups at my company, and the lifestyles of the people at my company are decidedly "normal" because of my peers' advanced ages and differing priorities (many have kids and didn't go to elite schools).