I play completely vanilla Sims 4 and I've never used any mods and I love it.
I've never had any reason to download mods. My game works well and I'm usually surprised how many bugs people seem to have these days. The only bugs on my game now are the one with Sims not eating leftovers from fridge and the staircase bug. Other than those bugs I have no problems with my Sims. They function well and they can take care of themselves, even when I'm not controlling them. I have no reason to "fix" anything with mods.
I enjoy playing vanilla and I have a lot to do with my Sims without mods.
I also don't need cc. I have all packs installed and there are a lot of clothes and other items to choose. I don't care about the latest fashion or making my Sims looking like supermodels. Of course I always love to get new clothing, hair styles or b&b items when new packs will be released, but not enough that I'd want to download any cc.
Maybe later when Sims 4 is finished, when there won't be any more updates I could try some cc, but the source would have to be reliable. I don't even think about it now. I love my game as it is. :)
