I use cc and mods because without them, the game is too bland for my tastes. I use MCCC, of course, and mods and cc to add customization.
I try to keep the folder to under one GB, but boy is it hard, lol. I love both looks, alpha and Maxis and my sims are a combination of them. I can always spot my sims in a crowd, they're the ones that look good, lol. :D
Yes, mods are a major pain especially at patch time but if I'm going to have mods/cc then it is up to me to filter out which mods are outdated. To me, it is a labor of love, otherwise who in their right mind would do this, lol. It also helps when simmers like luthienrising makes threads and posts which mods are broken and ones that have been updated. Kudos!