I can totally understand this.
I've been extremely introverted for as long as I can remember. My father has de-facto control over my household and essentially NEVER lets me hang out with people. That's not an exaggeration either, he won't let me go to YOUTH GROUP for fucks sake. The only people he approves of me making friends with are people I would rather murder with a tire iron. I can count the number of normal teenage moments i've had on one hand. It's a wonder i've managed to have sex.
And here I am, 17 years old.... slowly coming to the realization that my teenage years have been a giant colossal fucking waste. It literally pains me to see other people my age happy and independent.