Is anybody else ever saddened by the fact that by the choices you make and opportunities you take, you’re by default losing out on other choices and opportunities? That it’s impossible to live in or even visit all the countries that exist, meet people from every cultural group (some countries having a very large number of subcultures), learn all the world’s languages, work all the types of jobs you want to try out, take all the courses you want to take, obtain an in-depth knowledge of all the topics that interest you, have all the experiences you want? To me, this realization is crushing.