I'll be honest here, because that's the most kind I can be.
You went on /b/. What did you expect?
You need to get into a certain mindset to post on chans in general, but every board has their own subculture. /pol/, for example, refers to google and facebook as jewgle and kikebook respectively. They're also a lot more fond of "you have been visited by" pictures.
/b/ is special in that anything goes there. Anything and everything. You have free reign to fuck shit up, essentially.
I have had some really amazing and shockingly deep conversations on /b/, but I've seen a lot of crap too.
You have to be prepared to sit through all the namecalling to find enjoyment.
I dunno, maybe it just doesn't affect me too badly, since I already get all the namecalling in real life anyway. But honestly, stop caring about what chan posters think of you, especially /b/.