Assalamu 3alaykum wa ra7matu Allahi wa barakatuhu.
Alhamdu lillah, many westerners revert to Islam and in my view this is due to the fact that all people have an innate sense of religion and the ability of knowing God as One, and at a certain point they realise that being agnostic or a non-observant 'believer' creates a spiritual vacuum. People are attracted to the family values and the structure of Islam, the logical answers it provides, the Islamic way of life, the reference points it provides and so forth. The statistics read that there are more women then men reverting to Islam, ALhamdu lillah, and many people cannot understand why any 'free & liberated' Western woman would choose a religion often depicted as oppressive of women (complete non-sense, it's just plain ignorance, they do not even bother to read). In fact, Islam teaches us where the real oppression of a woman lies, because in other systems there's a contradiction between what women are told in theory and what actually happens in practice. For instance, female workers earn on average less than their male counterparts, although they spend the same amount of time at the work place.
Wa 3alaykum assalam w ara7matu Allahi wa barakatuhu.