I'm 17 and still have a stutter (RANT)

I'm 17 and still have a stutter (RANT) I'm 17 , I stutter , I've been stuttering since as far as I can remember. I recently did some reading on stuttering and apparently its supposed to go away by age 6 and... I've had it my entire life. I guess its not as bad as other peoples stutters , but its there , its always there. Most people say they dont notice it but I've been bullied by friends every year about it , I would usually get hung on a word , or sort of "stuck" on the word , as if I've lost my entire train of thought. I knew what I wanted to say but my brain was looping around that one or two words I got stuck on , and I try repeating it , then I repeat it again , and again , and again with no end sight for when I stop. I would be totally fine though if it wasn't for the way people react to it.. My dad keeps telling me to "slow down" as if that fixes it, he thinks its just be talking to fast but he doesn't understand , he just makes me feel like shit about it. Its always people acting like they are better than you because they don't stutter when , mind you , I was voted the best speaker in my English class time and time again. Though I doubt it was due to the fluency of my speech , I'm just extremely extroverted and loud which makes for decent presentations despite my stutter.. But that crippling insecurity stays there , because you can tell when people notice it , you can tell when people notice , they look at you different , their stares spelling out their confusion. I can't imagine what it must be like for anyone with a worse stutter than mine , as mine is mild and generally comes in during any form of excitement. If I am bored and doing nothing , I have no stutter , my stutter seems to be proportional to the intensity of my emotions , regardless of the emotion itself. It sucks though , as its usually during those intense moments of happiness or anger that people are more sensitive to the fluency of your speech. In those heated moments with your partner , you can kill the mood with your stutter , in those arguments in conflicts ,your stutter is a suicide note. I guess when I'm happy and I stutter people tend to notice less as the general environment of joy tends to override whatever mistakes people make in speech. I wrote this because I've never had anyone to talk to about my stutter , it hurts being the only person in your family with it , it hurts being the only person in your friend group with it , it hurts that people make fun of you for it. The worst part though , is that people think it comes from talking too fast , or not thinking out everything before you speak , what they dont understand is that we don't have control over it... Its not something thats our fault , and when people make it your fault , thats what hurts the most. I'm a 17 year old guy , I stutter, and its an insecurity I've never spoken about.