hey, i think people were being very polite to explain things and could have continued to do so further as well, but perhaps the fact that we answer these queries all the time in our lives made people frsutrated about it here.
But first thing you need to understand is that vegans come in all shapes and sizes. Veganism is not some kind of religion where people would be same to the last dot - so we all react differently. I think perhaps you saw everyone as "them vegans" and failed to see different reactions different people were giving if you got offended from couple negative comments?
If we compare peoples attitudes to the one you would get as a vegan asking meat eaters ethics and beliefs in ANY muscle board on the net, people here were being saints
The AAS use is a discussion which this board needs to have anyway - it doesn't have anything to do with you.