What combinations of lifespan/season lengh do you use?

I don't think I could help you. I play on normal lifespan with 7-day seasons.

"Simtown15;c-17448533" wrote:
I don't think I could help you. I play on normal lifespan with 7-day seasons.

Thank you for answering anyway :)

I play on normal lifespan with 4 weeks per season, because I prioritize experiencing every season over realism. Also I play rotationally, one family per week, so I get to explore each season with four families at a time that way. It just takes a bit of planning when I am setting up for the next rotation to make sure each family gets some variety as to what seasons they are active for.

"Daephene;c-17448565" wrote:
I play on normal lifespan with 4 weeks per season, because I prioritize experiencing every season over realism. Also I play rotationally, one family per week, so I get to explore each season with four families at a time that way. It just takes a bit of planning when I am setting up for the next rotation to make sure each family gets some variety as to what seasons they are active for.

I think you said it all. In my case i need to figure what is more important to me, realism or the experience of the changing seasons...

I play with aging off with 14 day seasons with no holidays. They got old fast. I avoid death in my games using settings and MCC. I play to escape the real world which is full of death. I don't want it in my escape from reality. I worked in the medical field for over 20 years. I changed professions about 4 years ago. I like the long seasons because most of my Sims garden and it gives them plenty of time to evolve plants etc.

Longest possible settings for both. Otherwise seasons go around so fast it makes me dizzy and the holidays are so crammed up against each other there's no space between them. I use a mod to get out of having to observe holidays anyway. I feel like there are too many, and too many fussy things to have to do for them. The mod disables Sims getting a bad mood from not celebrating holidays, so I don't have to go to the work of cleaning them out of the calendar for each save.

I do normal settings. Unless I have a family and I want the kids to age up a little faster then normal then I'll change it to short. But I'll keep the seasons the same 7-day period. Tried shorter once but I didn't like not having the full effect on everything.

Currently I'm playing Long/14 days. I'm planing to change it to Long/28 days sometime in the near future.

I just use the default one

I play with aging off & 28 day seasons. I have all the usual holidays we have here in the U.S.,and a 3 week Summer vacation. Plus a Christmas break between Christmas & New Years. Works out really well.
Edited to add: I delete most of the ridiculous holidays the game adds—Brawl Day, Talk Like a Pirate Day, etc. They’re just stupid. I keep the lottery, the TV Premiere one, and the free night on the town.