[Nursie]

Quite right, people are vegetarian for a variety of reasons, and draw the line in different place!

It's worth noting that good results can be achieved with proper temperature control and irish moss, isinglass is not always needed. Also many/most keg beers are filtered rather than fined.

[JustUhThought]

Vegans, on the other hand, draw a very simple line, with very simple (and powerful) rationale.

[undersuit]

Yes, Vegans have the moral highground and none of their dietary choices are detrimental to cute little animals.

[UlyssesSKrunk]

Well, maybe simple, but their rationale is nowhere near powerful in a lot of people's minds.