[mwfunk]

Of course they do. It's impossible to know whether or not God exists based on physical evidence; that's why religion is based on faith and not scientific research. People choose their religious beliefs, or (much more commonly) have them chosen for them. That's faith.

[humanrebar]

You make your best guess about whether God exists. You don't choose if it's true.

Also, faith means "trust", not "irrational opinion".

[maze-le]

> faith means "trust", not "irrational opinion".

Not quite, faith means "trust" in an "irrational opinion". Howerver, everyone should have the right to trust whatever opinion rational or irrational.

[humanrebar]

If you want to be precise, it means "trust in a person" in the original Greek. As in, the New England Patriots have faith in Bill Belichick.

That sort of faith can absolutely be rational.