Why do you think women have never shown the slightest hint of interest in me ever?

I have gone through my entire life and only ever had a few online relationships that went absolutely nowhere, i can't say i ve not met any women, i have, tons of them, not all my age at the time, its not like i haven't shown them attention, i have, i ve either been ignored or turned down flat, somewhere around my mid 20's i just gave up, i m now nearly 30 and they still largely ignore me, i get the impression i m just either unattractive or the fact i m a nobody makes me undesirable, i don't understand the cold shoulder, i m a pretty decent man, i don't believe that when you least expect it crap anymore either, i ve not cared for years and nothing has happened.