As I said, then you still need to grow up.
I'm not sure what you mean by grow up? Be more responsible? You mean follow a path that society says you must follow? Grow pubes? Hit the gym? Take on responsibilities that will drive me into debt? Please define what you mean by grow up.
The responsibility that comes with a career, far outweigh being bullied at school.
That depends. If you got yourself into debt (house/car/flat/etc) and the only way to keep yourself above water is to keep on making more money then yes, I can see that could be quite stressful. I chose a simpler life and I never put myself into debt to buy stuff I can't afford (except for plane tickets twice a year). I don't have things most 29 year olds have, but I also see the stress my friends go through and I don't think it's worth it. I have a regular part-time job in corporate that keeps my head above water, a bit of savings, and a pension plan. I pick up extra work which helps grow my creative skills (writing/illustration/other media related work) since this is what I am slowly growing into a career.
At school you could keep a low profile and ignore lousy comments and being pushed around.
Again. You seem to think that the way you were bullied (if you were bullied at all) is the defacto. For example: for two years I had a guy and two of his buddies come looking for me after school (not all the time but enough that I had to make sure I was someplace safe until they left the school grounds). As a kid, the constant threat of physical and emotional violence can weigh on you pretty damn heavily. At least I didn't have to deal with that once the main guy got expelled. And this is just one example of two years of my awesome school life.
In your work environment the buck stops with you when you are responsible for something. You can't ignore that, if you do you stand to lose your job and your livelihood. You can't keep a low profile in your job or you would be dodging work, that usually doesn't fly.
Um. So do your job to the best of your ability and chances are good you won't get fired? Assuming the economy is decent anyway. But then again, the corporate world is such these days that even the idea of a "permanent position" is a bit of a joke. Again, no debt makes your career far less stressful.
TLDR: as an adult you have WAY more control over your life than you do as a child. As an adult I can limit and deal with the stress that comes into my life. As a child? Yeah, not so much.