No, it doesn't sound like laziness to me. I hope you didn't think I said your son was lazy. What I was saying was that lack of confidence and anxiety look to us as if someone is being lazy, but in fact they are scared and anxious.
I think it's a relief for boys like your son and mine to have something useful to do, something they don't have to make a decision about, and something that they feel good about doing.
Your son sounds a lot like mine. In social situations he is so quiet he is invisible, and people forget he is there. Teachers don't know his name after 5 years ...
I think some of it is hormones. One minute he's dark and gloomy, the next he's singing in the shower. A very hopeful thing about your son is that he has sought and received help, and if the anti-depressants he is on aren't working, he can always ask to see a different doctor or go for some counselling.
Winniemum, I feel sorry for my son, as so much of the enjoyment of being young is being sucked out of him right now. He once explained to me that he just doesn't see how he fits in or what he is for. I never really understood this business about finding your identity, but I think that's what my son is doing, and I wonder if yours is too.
Your son sounds like a lovely boy, and I hope he finds something soon. I'm sure he will! 