Think about it.
You're a nerd. You're a child genius. You're quiet, which means some kids will like you, who are good kids themselves, while others will walk over you because they know they can.
You're an outsider, and with that, it's hard to interact with other social cliques. You're best pal, Harry Osborn, despite being rich, is also treat as an outsider by his school chums. But, Harry, through being rich, has something that you don't - friends and opportunities that money can be, and others will want a piece of that, and willingly allow him in places where you can't go.
You're good looking, but you hide behind glasses, and your nerdiness is a turnoff for most girls.
Like any growing teenage boy, you'd like the hot girl to notice you, and perhaps they do, but your confidence in that belief is shaky, so you end up not trusting that feeling, thinking to yourself,
"Why would they want me?"
Most of the school knows you're the quiet and reserved type, a nerd, with top grades, a social outcast. But underneath all that, in your close circle, you're witty as hell. The beat backs you've received in life for being all the above has helped you develop a sense of humour, that helps you cope with everything, and while you hear it internally, and only your close circle, you still haven't got the confidence to say what you feel to just about anyone...because you're afraid of the consequences, because you ARE still all of those above things.
Now...one day, you venture out on a high school trip. Before you know it, you're bitten by a radioactive spider. You feel like you're dying...then, you feel great. Better than great. You have super strength, speed, agility. You have something you never had before - power.
What will this do to you? It will change you. Now, you feel you have the power and the confidence to say and do what you feel, because now, it's erased all the above descriptions. However, this power goes to your head too much...and it's not long before you say things like,
"Sorry, pal...I'm a wrestler, not a cop."
At your uncle's funeral, you start reflecting on who you are why and why you're here. You start to realise the balance that must be taken, between being a kid wanting to have fun with his new powers, and being a man. A man with all this power and responsibility, and the weight of his actions if he choses to act selfishly with them, and allow his new found confidence to pull him in the directions that turn him into something he's not. You must never lose sight of who you always were before your powers arrived, and all these things that sucked, you realise kept you grounded above the rest...While still having fun with kicking the big bad between the legs and providing him with comic relief for his pain
That's the Peter Parker I want to see.