There are many ways to respond to this, one of which is to echo George Bernard Shaw when he said “The fact that a believer is happier than a sceptic is no more to the point than the fact that a drunken man is happier than a sober one. The happiness of credulity is a cheap and dangerous quality.”
Always Question Authority
One of the beginnings of human emancipation is the ability to laugh at authority. ~ Hitchens
Always Question Authority 
Old George …….. he’s a ‘one’!
Ha! Glad to hear that it’s being more widely noticed that nonbelievers are a happy and satisfied bunch. I actually just wrote a piece regarding being told ‘I’ll pray for you,’ essentially concluding that I’m to happy with myself to justify being prayed for.