What age bracket do you think each life stage represents?

I have a 5 year old at home, she's def. not considered a toddler here, I've never heard of people calling a kid over 2-3 max a "toddler" and 3 is pushing it. Toddlers in the game learn to walk, talk, and use the potty. Nothing like any 5 year olds I know.

@FurSimsOfficial While I agree with some parts of your post, what about people who prefer to age up their Sims manually?

In my current game, I decided to have ageing off and age up manually. I set the age ranges to try and replicate the days of a normal game lifespan setting, adjusted slightly to reflect real-life ages (except babies, cos they are useless and no point playing), so this is what I use, making 1 sim day as a 'year':

Baby - under 1
Toddler - 1 to 5
Child - 6 to 13
Teen - 14 to 20
YA - 21 to 39
Adult - 40 to 59
Elder - 60 plus

So, for instance, if my sim had a baby I would age it up the day after, then after 5 days of play I would age it up to child etc.

Infant < 1 year
Toddler 2-4 years
Child 7-13 years
Teen 14-18 years
Young Adult 18-30 years
Adult 30-55 years
Elder > 55+ years

I think the older you get to 50 the more you realize it's not the stage of elder. LOL I just entered my 40's a shot period ago and there is no way I would consider myself an elder when I entered my 50s.

Idk but teens look like they’re about 25 years old auditioning for Gossip Girl prep school roles and elders look about 107. IRL some senior citizens certainly look older than others but every single elder in this game looks to be a zillion years old. Plus, it seems like just one woohoo or jog and they’re kaput.

Answering for myself before reading any other answers:

Babies: 0-1
Toddlers 1& up to 5
Children: 6-12/13
Teens: 13-18
YAs: 18-30ish
Adult: Mid 30s - ... (There's really a stage missing between adult and Elder, though I guess you can apply age effects to sims and change their outfits).
Elders: 70+

Babies:Under 1 year
Toddlers: 2-5
Child: Ehh...like 8-11ish maybe?
Teen: 13-18 (but more on the 16-18 range)
Young Adult: 19-35ish
Adult 35-65 I guess
Elder 65+

LOL some of the elder age responses make me giggle.

To put it in perspective...

Jennifer Lopez is 50
Jennifer Aniston is 51
Brad Pitt is 56
Will Smith 51
Halle Berry 53
Nicole Kidman 52

None of them look like elders to me hahah

Baby Newborn only
Toddler 2 to 3 years
Child 6 to 10 years
Teen 16 to 19 years
Young Adult 20 to 33 years
Adult 40 to 59 years
Elder 75 to over 100 years

We are missing older babies, Preschoolers, Young Teens & Seniors.