I don't think I'm explaining this well...I definitely don't have an alcohol problem nor have I built up any kind of tolerance. In fact, I'm kind of a lightweight and, like I said, don't like throwing up so I never drink too much (probably why I have such mild hangovers). Furthermore, these only happen maybe once a month, it's not like I drink in order to produce a hangover the next day, it's just something I've noticed happen over the years.
...anyways, it's not like I'm going wild while I'm drunk, nor would I 'fall apart' if I stopped drinking. The reason for my post was to see if anyone had any insight as to why this might happen (biochemically speaking) and/or other - yes, healthier - methods for achieving the same effect. For example, an alternative form of mild sedation.