Hey there
I've been playing for about ~150 hours in total time combined across 2 worlds, and both experiences had very similar trend for me - beginning is just sorting out priorities like food>shelter>upgrades and everything is well here. But when I reach around iron age, in both worlds it was about fall, something changes for me. Everything becomes about efficiency and not enjoyment. For example: I gotta make my farm bigger, while I do that also have to get my leather flow going; after that, this year I didn't have time to build a vineyard so I have to do it now in winter to have more time to get bushes in the spring and summer and so on; without any break even to make my home pretty. This turns experience into point A to B eternal journey of searching "now I am finally complete" feeling, where all is about getting quicker to next tech or whatever milestone I put before myself. In a sense, I think this is sort of fomo, but why it appears if everything is the same in the next in-game year and what can be done now also can be done later?
I never had any issue like this in any other game, minmaxing is also not really something I do. But I have no idea here why this happens here.
Also I dismiss copper and bronze age, and almost don't do any tools there aside from necessary for progression (so I run around with flint tools even in bronze age)
Any tips or your own ways of how you find enjoyment in the game?