why there are so many gods & goddesses in the Hindu Spirituality

Aum Sai Ram.

Every soul is aligned to a particular aspect of God - Head. That's why they say, there are 330 million Gods and Goddesses in the Hindu pantheon. The first step of Spirituality is to find out, with the help of Guru, which archetype you best vibrate with; later take the right efforts to manifest the ideals behind that particular idol.

Once there is no difference left between the idol and the ideal, you may safely move on, to the next step of spirituality - To discover the Formless Spirit!

Form or without form, it's the same Essence, Manifesting as Different Experiences. Every aspect has a unique characteristic attached to it. Once discovered, we imbibe that very essence of it - making us a part of it.

Say for example, the one who is dedicated towards acquiring Knowledge, is directed towards Saraswati.

so to use his inherent ability to achieve the end, in the form of Vidya.

For those who are attracted towards wealth, they were directed towards Lakshmi, so to fulfill their worldly desires and later directed ahead to the Spirit, without any undue distractions.

Such was the simple practicality of our ancient seers; to use what attracted you the most and use it to achieve total dis-attraction. Only after experiencing the beauty of form, could you then really appreciate the formless spirit.

The One became Two; then Two became Three and the Three became many. Spirituality is the reverse journey from many, back to The One!