Sebastian: please seek professional help before you hurt yourself or someone else.

Yep, I agree. Sebastian sounds like he drives himself too hard and has variously 'lost it', 'gone mad', 'gone off the deep end' or is in the early stages of a massive nervous breakdown.

Not too many people would put up with even a fraction of his bile in real life, so Sebastian may be very very lonely or surrounded by other mal-adjusted people.

So yes, Sebastian if you're reading this, please seek counseling ASAP, the world is not how you imagine it and you are in dire risk of going mad.