Why would people do that?
Religion has always been an instrument of domination in Europe. The secular authorities keep people down and busy, the churches taught that this is the only possible way to be allowed to live.

The communist doctrine has done the same, the only difference being that paradise appears later, but not after death. Marx just did not plan for the long term like the 12 apostles.

But paradise did not come, on the contrary, not even socialism triumphed as promised.

Why should people now run after other people with similar promises but the same claims to power?

God is dead in East Germany and he will not rise again. It may be that he will be brought in again, through migration and through networks. But these are also different gods that are coming. And the worldly authorities no longer need him. It also has new gods. These are called climate change, sustainability, diversity and anti-younameit. In terms of systematics, they are exactly the same as the old religions or what is understood by communism.
They all preach the same thing.
"Do not think for yourself, everything is thought through to the end by the authorities.
"Do what the authorities say, otherwise you will be expelled".
"There is only one right way to live and that is our way".

Nothing has changed, not with Jesus or Mohamed, not with Marx or Mao and not with Al Gore and St. Greta.
It was and always is a kind of collectivism. A man counts for nothing, the collective, led by the authorities, is infallible.

But whoever has experienced how a god falls and perishes no longer believes in the infallibility and immortality of other gods.