I usually only play my simself which is my main save. It is now on it’s 3rd generation my simself’s grandchildren as young adults some with their own children, some single, some in relationships without kids. I will play rotational between all the main households, single and family depending on what suits that sim. I will play other households in the save mainly the goth family generation as I’ve also invested in that family but only as it has close ties to my simself family. Until I joined this forum I never realised how people play sims differently and I had never even heard of challenges before. I’ve always played my simself even since sims 1 and it’s the only gameplay style I find most enjoyable.