I know no atheist who is seeking a replacement 'believe', we are simply not wired to "beleive" in something or have "faith".
Oh, there are plenty of those.
Just look up any group of self declared atheists and it will be chock-full of them.
Trouble is, they are not really atheists... and you'll often hear them declaring themselves "agnostic". I.e. Hedging their bets.
They also tend to be angry at one religion in particular, or tend to be more tolerant or leaning towards eastern religions like Buddhism and will still respect the local religious holidays and superstitions.
Can you tell I'm a Scorpio?
Google tells me that' why I am "dead serious in my mission to learn about others, to zero in on the essential questions, gleaning the secrets that lie within".
And then there are those who've "figured out" that "Science is smart. Atheists like science. So, being atheist means being smart." and are jumping on the chance for that ego boost by correlation.
Very similar to how being a nerd has of recently become socially acceptable and even cool, so much so that now nearly everyone is a nerd.
Particularly the jocks. They are now "sport nerds".