Simon Pegg doesn't owe strangers a thing

He doesn't. All the baloney about "he wouldn't have a career without fans" and the extremely common rhetoric is tosh. He'd still do what he wanted, he just wouldn't have a mob of stalkers obsessively deconstructing him at all hours of day. Here's the thing, if someone doesn't now you and you approach with an air of familiar, they are not going to respond great, because they have no emotion invested in YOU. It's easy to feel like you've "known" a celebrity as long as they've been in the public eye and in a way you do. But acting is just a small part of their lives, and they (much as it may be disputed by pundits) ARE ordinary blokes with the same motivations and rewards. Certainly fame does come with the expectation of recognition but when you're under the microscope your entire existence unless you make a genuine effort to craft a squeaky image (Oprah, etc.), anything less than the ivory mouthed starlet in the headshot is going to disappoint people. Before you respond with resentment, ask yourself what you would do. Not once but over and over, everytime. It might get exhausting being anyone but yourself.