Are u too quick to judge the goodness in others?

I have the same sometimes. And of course it happens もっと見る on the internet. Here, people don't have faces, あなた just see their words and can't observe their body language または facial expressions etc. ;).
Don't pay much attention to the stupid onlinees, they're just here to pick fights 'cause they're miserable in real life. ;).

Yeah, sometimes I assume the person is very sweet waay too fast and then they end up being cruel, vicious people. But this is a normal action :)

this happend 2 me in my new school..i was like"awww those girls seem so sweet and nice"..and then after weeks i'll be like"those girls r the most rude girls i've ever seen:@"..so i discover that they'r not that nice girls i thought they were:(..and it always happens with me:p

Yes, but I'm never totally careless with people I don't know that well, apart from my two best フレンズ who I know for as long as I can remember. I only entrust my deepest secrets to them, または my father. I've only made one exception yet with a different person.

The first impressions I have of people are usually correct. I think negatively of everyone upon first meeting, and I'm usually never disappointed.

u don't have to b so nice,cuz then u are that person who lose & who's gonna b disappointed

I always try to give people the benefit of the doubt. Sometimes あなた might meet someone when they are having a horrible day. I just try to be nice and respectful. Most times it takes a while to get to know a person well. If we click, great. If they turn out to be mean または rude, well that's their problem. I can only control my attiude and actions. I will treat people nice, until they prove it's not worth the effort. If that's the case, I just let them go. Getting angry just ruins my day, why bother?

No.

Well, I don't usually judge how good someone is. I mean, I'm always automatically nice to everyone, but I don't really like to judge how they're going to respond.