If you don't prefer to visit religious places, you might want a partner who won't drag you to those places. This gives a lot of relief as religious discussions and beliefs are sentimental. Whether you have never believed in God or started not believing for some reason, a like-minded partner can make your life more comfortable.
In the last decade, the number of people in the US has been almost doubled who doesn't believe in the existence of God or doesn't want to go to the worship centers. As the number has continuously increased for the last few years, many online dating sites have started to include the option of atheist.