Beyond the disdain Jews of limited consciousness have, i.e. reform/conservative, the problem that the conversion process is so long and difficult is this; weeding the the deceivers, hidden lost tribes adherents, and those that have ulterior motives. The difficult process weeds out the gems from the dirt. If being Jews is not meaningful and does not include an appreciation and commitment to Mitzvot, better to remain a good goy.
from the article: Zionist rabbis agree to serve on independent conversion courts