I'm a grown adult, C-level professional with ZERO real-world friends. And I've tried... but the connections haven't stuck. It's quite bothersome, and makes you question everything about yourself and why this outcome could possibly be true after a lifetime of having tried to maintain and improve connections with others.
I've adopted a more tolerant and accepting self-view with respect to this, and the pain level of being completely socially isolated is in the 20-30% range, but the pain of on-going disinterest on the part of others was quite high.. like 80-90%. So it's a bit of progress. But my point is: for those who haven't found their way to an operable level of acceptance, a "WTF!" response isn't kind or helpful or insightful.
There are many of us "ForeverAlone"-ers out there, and trust me... we're 10x more confused than you might profess to be.
It isn't readily apparent to me what that would be, but instead of assuming that you were just being a jerk, I suggested trying harder to communicate whatever it was you thought was of value there.