The reality we should be learning is this: continuity and commitment are at their strongest in religious milieus where people are not given the option to exercise bechira so easily.
If a person is not allowed to think for themselves, question things, philosophize, make their own decisions regarding major life choices, denied access to television, internet, books, university education, and if they know that thinking for themselves or deviating from what is expected of them will result in ostracism, they’ll be less likely to leave or drop out.
While Haredi communities thrive due to their having 10-15 kids per family, whether theirs is the type of religion that could work for all people is another matter entirely.