You can’t be Batman. People like to say you could be, but Bruce Wayne was a billionaire who had the ability to dedicate his life to training and self-improvement. You can’t be Superman – he was born that way. You probably can’t even be Captain America; sure, Steve Rogers was a scrawny dweeb before the Super Soldier Serum, but he always had a kind of intense heroic decency to which most of us only aspire.
But Spider-Man? Yeah, you could be him. Peter Parker was an angry nerd in the right place and at the right time, and when he got super powers he immediately behaved selfishly with them. He totally fucked up, got his uncle killed. And from that point on Peter never quite made the most of his powers; he was always poor, he was always harried in his personal life, and he was always hated by the police and media. Peter Parker was, and is, a schmuck. Just like you. Just like me.