According to the hindu beliefs, the energy or power in the feminine form should be used for attaining the pure consciousness or wisdom within us, which is otherwise inactive in the static masculine form. The awareness about the self and the universe leads to the ultimate knowledge which is the path to moksha or the end of physical existence in earth. If the knowledge is never attained, the cycle continues and the life in earth continues through different reincarnations. The one who seeks spiritual knowledge and puts his desires and efforts to attain the right consciousness finally surpasses the cycle birth and death, and attains moksha where the soul reunites with the supreme power.
Moksha can be defined as the state of liberation or release when your soul dissolves or unites with the ultimate supreme power and therefore you overcome the cycle of births and deaths and also the associated temporary happiness and sorrows. There is actually no more " you" once the soul within you have united with the supreme power.
Attaining the state of moksha is quite difficult as you will need to attain the consciousness or awareness for that. One who is enlightened or attained the pure consciousness or wisdom will have no desires or attachments in his mind. He sees everything as part of the same energy and he should have overcome all the desires from the five senses.
Attaining this kind of a state is very hard or nearly impossible as we are all driven mostly by our emotions, desires and passions. It is believed that there were great sages who attained the wisdom or consciousness as a result of deep meditation for years. According to Bhagavad Gita, God Krishna explains that there is an alternative path for attaining the world you want and the simple yet the straight path is through pure devotion and love for god.
The main subdivisions in Hinduism happen here.
There are many people who are devotees of God Shiva who want to go to the Shivalok where god Shiva and goddess Parvathi resides, and they are known as the Shaivas and the sect is known as Shaivism. In Shaivism, people consider God Shiva as the supreme god.
There are devotees of God Vishnu or Krishna (incarnation of God Vishnu) who desire to go to the Vishnulok where God Vishnu and goddess Lakshmi resides, they are known as the Vaishnavas and the sect is known as Vaishnavism.
Personally, my favourite deity is Krishna and I believe Krishna or Vishnu as the supreme god, but at the same time I can clearly understand the equal importance of the feminine power that is present in everything in the world. The believers of the different sects, including myself, also believe in other deities and so other forms of gods and goddesses are also worshipped by all the HIndus although the view about the supreme power is different in each sect.
In Shaktism, devotees consider the goddess as the supreme power in the world.
It is very important to note that the believers of all the sects in Hinduism worship all other deities of gods and goddesses too, regardless of whom they consider the supreme power. The practice of worshipping different forms of the mother goddess or the feminine power is considered very important and there are many number of temples in India where the main deity of worship is any one of the forms of the goddess. In other temples where the main deity is different, the worship of the goddess can also be found along with the worship of the god. In general, each temple has its own primary deity of worship, but other deities are also worshipped alongside and the worship of the sacred feminine goddess is considered important in most of the temples.
My understanding about all these different beliefs is that the supreme powers that we call God or Goddess are the different forms of energies like that we saw in the Ardhanarisvara concept, and the presence of this power or energy is there in all living and non living things. The only difference I can understand is that people choose to worship this power in different forms based on their personal preferences.
If you read Bhagavad Gita, you can see that God Krishna or Vishnu is mentioned as the supreme power, but it is also understood that the deity anyone wants to worship is completely a personal choice and you finally reach where you want to, of course based on your actions too. And the dedicated path of devotion is the way to attain the world you want.