menn, don't do that. in the past i was drinking min 10 cups coffee (ofc guatemala coffee *-*) for a day. and my stomach starts to burn. now i only drink 3 cups for a day. (and drink it after breakfast) u should do that too.
Hard to define. I guess physically or psychologically harming people instead of trying to find common ground would be widely considered as "bad". There are many other factors that play into that, and it's ultimately not possible to create a definition that takes every encountered situation into account. Just don't harm others because of their opinion or individuality, be constructive.