Please don't miss the point: you had the opportunity, as did many of your middle class peers, to discover your aptitude for computers at an early age. This is not an opportunity afforded to children in low income homes. You are not required to apologize for this. Please don't. Just recognize it for what it is, and be grateful you had an early chance to discover something you love.
My 8 year-old and I are starting a side project to build Ubuntu machines out of discarded parts for low income families in our city. One of the reasons we're doing this is that kid out there who might be a genius programmer, but would otherwise never get the chance to hack a kernel or troll a newb on IRC.