Necessity of God in human life

Why do we need God or someone whom we can pray to while we go through bad times?.

Well I am not the right person who can comment on this topic, but still can predict what may have brought need of God in our life.

There are several situations when people around the world may feel depressed when they don't get what they wanted, when lost their loved ones', when they have everything but no one is there with them to celebrate or they go through some bad times etc.

In these kind of situations, people who don't believe in anybody besides themselves, get over it and live in happiness all the time.

On the other hand, people who are scared and don't believe in themselves, start finding someone who can help them and for that they go to some peaceful places and start praying and if their wishes are fulfilled, they think some power who doesn't belong to us has helped me and if these kind of people go through bad time again, do same kind of things as they did before.

By doing this people who are suffering from mental illness like depression are able to live, else they would quit their life.

People who are not self reliant could experience the godly power may be on earth if they had been helped to recover the problem by someone who are more self reliant and can help people getting rid of problems they have, may have been considered like God and we as over generations consider them like God as our ancestors started believing.

What if these self reliant who helped other people out of their problems did not exist, we would not have had any term like God and would have learnt to be much self reliant.

There can be much more significance of having Gods as people around the world have considered to have with us and lots of temples/Mosque/Church etc people built over the time. These places used to be there in outskirts of city or on higher altitudes from ground like mountains where pollution and noise can't come when you go there looking for peace of mind.
These place used to be built with some metals inside that emits positive energy which helps people calm their mind and reduce the stress they have because of their daily life.
So its good that people consider that God exists, it may not exist though because while being in bad mood, you go to some divine places and spend some of your time there and try to meditate in presence of positive energy, it will get you over bad time and calm your mind.