Besides, modern orthodoxy is unsustainable. It essentially is the cultural aspects of Judaism without the heart which almost forces one to choose one way or the other.
Differnt forms of orthodoxy are for different people. Some people just cannot handle the Yeshivish/Kollel Lifestyle , Some cannot handle the Chassidic lifestyle and some cannot handle the Modern Lifestyle.
Everyone is different and has different needs. Some people need chumras and love them and some get overwhelmed by them and go off because its too much for them.
Not everyone can get married at 19 and have 14 kids , not everyone can sit and learn 15 hours a day and not everyone can go into the outside world and work with all kinds of people including those who life lifestyles your abhor without making comments.