So those you've loved and lost, in a sense, you're with them (or they're with you, it doesn't really matter).
The world telling us what religion has tried to make us believe for as long as we've existed. For as long as we need to believe it, we will, with or without a cross and a book of outdated rules.
Nothing makes me more religious than feeling like a part of the world.
And for someone like me who can't quite seem to adapt to arbitrary rules, like when to sleep or how to love, it's sometimes a great comfort, that relatively, it really, really doesn't matter.