I can't speak for all people with autism as they are all very different from each other - but I would say my son has a very 'normal' life and is very happy.
There are differences with him and others his age. He finds it harder to make friends but connects with people who are on his wave-lenght. He doesn't like football like a lot of boys in his class - but has many other interests. He does have a different way of viewing things which I love about him.
He still sometimes finds it hard to control his emotions but is getting much better at this as he is maturing and learning ways to cope other than crying, shouting or hitting. Now he often recognises when he is stressed and asks for a break to calm down.
He is getting on well with his schoolwork and we just had a very positive parent-teacher meeting.
I went through a very bad time when he was diagnosed as everything I read about aspergers on the internet was so negative and full of gloom. I thought my son was going to have a terrible life but things haven't turned out so bad at all.
It would be a more straightforward life for him and us if did not have aspergers though as we have to make a bigger effort to help him learn social skills and things like that. His little brother naturally knows how to talk to people and how to behave in a group of other children whereas my child with aspergers needs things explained more.
I would say the help he got through school after being diagnosed has made a significant difference to him. Also, people (like teachers) understand he is not being badly behaved but struggling to cope at times.
There are adults with aspergers out working and married but they might not ever have been diagnosed but are somehow managing or struggling with some parts of having aspergers.
I find these videos uplifting even though they acknowledge the struggles these people with autism had growing up:
m.youtube.com/watch?v=SDFJr7kcmRY
m.youtube.com/watch?v=B-xgdqNtcDI
m.youtube.com/watch?v=ejpWWP1HNGQ
www.ted.com/talks/rosie_king_how_autism_freed_me_to_be_myself/up-next
A friend of mine had issues with her son's behaviour in nursery and they thought he might have aspergers but it turned out to be dyspraxia - maybe consider that too.
Your son might not even have aspergers and could be going through a difficult phase that will pass but I would definitly get him checked out just in case.