I get the feeling that you're depressed. I can't help you with validation but I can provide another point of view, the devils advocate if you like, that may put the PhD into perspective.
Both my parents & my grandparents all have PhD's. So I know from considerable expereince what a PhD means regarding the quality of a person...
To illustrate the point... a schizoaffective, borderline personality disordered friend recently said to me, "isn't it wonderful that people spend 7 or 8 years getting qualified and turn out to be totally useless?" I couldn't agree with her more.
My mother sexually abused me and chronically psychologically tortured me such that I have permanent brain damage and personality disorder. She has a PhD in clinical child psychology. Pushing 80, she's still called to the stand in court as an expert in child sexual abuse based on her PhD. Hmm... I know the title of her PhD but I can't disclose it here as that would be identifying & against the guidelines but I can tell you it is along the lines of 'how much can you torture a child'. My dad was complicit in all the abuse and he had a PhD too, in a totally unrelated area. I've been re-traumatised by several PhD-holding experts who are supposed to be able to treat trauma but they abused me instead because they were inexperienced in such extreme trauma cases as me.
Do you really want to be part of this PhD community? If you ask me, you'd make a far bigger, bolder & more effective contribution as a volunteer. I volunteered for 15 months at my local community house and the attendants were the most needy, desperate, damaged souls I've ever met. The need is there, it needs folks able to try to meet it.
Personally, I don't think that personal, intellectual stimulation & academic prestige are adequate reasons to undertake a PhD. They are costly to the federal govt funds and I gotta ask, who will this PhD research benefit in reality? Wouldn't you cause way more benefit simply by volunteering at a community house or being a peer support for those who are traumatised to the point of being low-functioning?