My wife and I got married at a nice venue with family and friends there, food, cakes, vows, pictures. Ah, memories. Religion didn't come up, not sure why it would. Ceremony exists without religions, crazy I know!
Death, yeah, pretty important, sad, depressing. Not sure what it has to do with religion though. Births, baby showers are good, especially for new mothers, lots of support both in terms of people and goods, it's a crazy time that first child and having the startup-package crowd-sourced for you is pretty cool. Oh crap, we need a placemat now that she's on solid food because she's basically just eating off the table!...oh yeah, we got one of those from Judy! You won't be finding "goods from gods" though, they tend to be silent at most of these functions and NEVER bring gifts
Life without religion is exactly like every aspect of life, without the religious flavoring and commentary. We do think it's a little wierd to go to a wedding where have to sit through a Church service with strange songs about mythos and hand signs and gestures of unknown meaning and origin, or see a baby having water put on their forehead, etc., but it's not so strange that I'd outright refuse or roll my eyes. My wife may, I just give her the "don't go there" glare and she usually behaves
Christmas is Christmas, it's a holiday involving family and gifts and foods you bring out once a year, and something for kids to look forward to without going overboard on materialism and a hundreds gifts of course though. Also, to watch Christmas Story
. We're having 4 generations together at our place this Christmas, looking forward to it.