* People care because as a whole, humanity is insecure and we all have to seek strength in numbers. Or, more simply, nobody can stand to pick the "loser" and (as such) will steadfastly defend his/her choice despite overwhelming evidence to the contrary.
* That also accounts for fanboys in general.
* I too lament that platform games (GOOD ONES that is) are no longer mainstream. LBP deserves much better. I don't own it yet, but I will after holiday bills.
* Why oh why did the OP have to ruin the thread by insinuating that LBP is better than Galaxy? Up till then the post was mostly coherant. Having an opinion is fine, but both critical and popular opinion largely disagree though...
* For the record, I liked LBP better than Galaxy (though I have played LBP much more, so perhaps that is unfair). However, honestly, I think I prefer LBP because it is more old school 2D(ish). And... gasp (along those lines) LBP is not as good as SMB3, SMW or NSMB. Or, to paraphrase the OP, LBP is very but those others are oh so much better.