You will have to pad out your thinking. It's not clear what you are specifically referencing in biology to evidence religion as nonsense.Religion is nonsense because evidence from science shows that humans are just very complex biological machines.
And?We are really no different than other animals when it comes to biology and our brain works the same way as the other primates.
If it's all about control of the masses, you would be better off arguing against the soul on the strength of the manipulation of social media ....Many people think we have a soul, a spirit or a personality but I think that's a myth made up by religious people in order to control people and tell them what to do and how to behave.
Then I take it you have no problem with models of religious thought that conceive of all life possessing the same qualitative essence, ie reincarnation.The afterlife is also a myth in my opinion. There is clearly no afterlife because all we really are is animals. Will a chimp or a gorilla go to heaven when he/she dies? If your answer no then why should humans be any different?
The rise of secularism under the umbrella of the industrial revolution hasn't exactly ushered in an era of peace ... just in case you weren't familiar with modern history.Throughout history religious beliefs and behaviors have been the source of incredible human suffering and misery and I think that's because religion is not actually true but is based on ancient myths and lies.
Even if you want to isolate conflict to the ideological, the reigning champions are communists, kind of the opposite spectrum of the religious .... which in itself is quite a remarkable feat since to win that award they even had to beat the rule of averages, given that the world's population predominantly identifies with some sort of religion or other.