I don't understand why people care whether or not someone believes in God, especially if they themselves do not. Sorry you had to deal with that, I think you might be right and the spirituality niche might just be a hot/instigating topic for some people unfortunately. But it sounds like you are doing great despite that so congrats! I hope you feel free to write in whatever niche inspires you, it's cool you have success in one but there is no reason you couldn't do well in others too. I am new here and have blogged for a few years in a very non-niche way so I understand the pressure to feel like you need to pick a lane and stay there. Best of luck anyway, don't let the haters upset you they clearly have nothing better to do!