Weed for me and it was about 16 and never tried drugs since. I didn't know it was also laced with acid so not sure what effects were the weed or the LSD.
About 3 folders deep for me. I usually separate the games that I've played all content for (but might replay) and those which still have fresh update content.
Some recent games have pretty in depth character customisation, up to the point where you can use a slider to change most facial features. I used to spend time on character customisation but nowadays I just use a present and change a few things.