I am not really sure what trolling is in the first place,
but I will answer the question for the OP:
I like reading the fora, because they give me new ideas. In real life I am usually talking to people, who are same minded as me, at least generally... I guess that comes from being a student. The only people who have significatly different lifes from me in real life are the shopowners I meet when buying groceries, or the police man, who stops me on the street or so. Usually only small talk is exchanged.

So I like reading views and ideas from people, who have a totally different background, whose views are sometimes new to me and often contrary to my opinions. I think this is good to keep your opinions from rusting and just staying as they are, only because they are never tried out or tested.

And I think if FPSs are important to you, than you also want to exchange opinions on them and broaden your horizons or so...