Thanks for all of your replies! I've talked to people on some other forum before, and they were often surprised if I told them something like "I'm an ISFJ, I'm going to get my masters in chemical and physical biology and I don't want kids."
I guess that just has to do with stereotypes.
What I also think is funny, is that 26% of population consists of xSFJs and on PerC, it seems that 90% of people is a N type. :')