I think the INFP description is a bit silly... seeing the world through rose colors glasses and everything good or bad or optimistic or gloomy.
I'll admit I see that you guys are off in la-la land at times but its not that bad.
I haven't met an INFP that I haven't liked. I've lived with 2, so far that I can think of. My aunt and my current roommate. They are kind and cordial, friendly and always seem pretty outgoing for introverts. Fun, smart, gentle.
Only negatives I can think of are laziness and lack of practicality. They end up getting everything done in their own time but seems like they are a bit adversed to working. (The ones that I know all share these 2 similar qualities. They each have their own bad and good qualities as well, but I won't mention them since they are individual related and not type related. ) Only about half have the laziness. About 90% have the lack of practicality.
Don't think I've ever gotten into an argument with an INFP, besides some small tiffs with my aunt that lasted all of 2.9 seconds. Never had a reason to. And I like that they're just laid back that way.