For what it’s worth I also turned down Princeton and took Yale. Everyone is individual and has their own story and own priorities. That being said, you may not know this but the cross admit data between Yale and Princeton skews heavily toward Yale. About 71-29% (with 71% choosing Yale) . Hard to think 71% of people are making “wrong” choice. Perhaps you may realize in short time that your spot in Yale was a twist of great fate. Congrats.