There's two explanations for why all the man made religion. Why we seek? Man has a nature interest deep within his fundamental makeup to connect to his creator (hints the 1000s of deities). Why so many? That answer is simple. Satan. That's exactly why our Lord Jesus Christ said the path is narrow because of the 1000's there is only 1 living God. If you ever really study all world wide religions you'll find that, yes, they are very many 1000's upon 1000's but you can break this very large number