Yes I can see how you would learn a lot here. Most people in real life tend to be SJ. I dont have anything against them but theyre normally not very interested in the theoretical things. My mum is an SJ and she thinks everything thats going on on the internet doesnt count. Do you have any similar minded people in real life as friends? I tend to instantly connect with N types, not so much with S types, though my former best friend for years was an Esfp.
That thing with your friend and your mum does sound nasty. You must have a young, pretty mum though.