Nope, it would be better if a person live by the teachings of a religion, instead of believing in a religion. There is a huge different between in believe in a religion, and to live by the teachings of a religion!
But i assume you where talking about living in the ways of a religion right? To answer that we have to take a look at our society, and how we live with each other. That is to see if it's needed to have a religion to live together on this planet, and the answer is no.
People only need common sense, and general morals and understand what respect really means, to live together on this planet.
There for it's not needed that everyone should believe, if we want to live with each other, because the knowledge what is needed to live in peace with each other, can everyone figure out if they use their own brains!
That saying, im glad that we have different minds and spirits, it would be really boring if all the people followed the same religion, logic or philosophy!
A man can accept or not but rather in what manner can act in the public eye? I make an inquiry here. Would we be able to overlook humanity value like right of living or right of casting a ballot? Obviously no, He have decision to concur or not but rather can not act against. To answer fundamental inquiry, Religion is isolated to social act and individual conviction. I think in social part we ought to have legitimate constraint.
Sure it is based on believe on what you feel about religion and trust. I think every person should stick to a particular religion.