Being successful is the common goal most people share. I think you'd be hard pressed to find someone who doesn't want to be successful. There is also this huge societal pressure to "be successful". Depending on where you live there may be different cultural definitions of success so I can't speak for everybody's situation, but in the United States success equals lots of money. It doesn't matter if you're not really enjoying your job, as long as you're bringing home the big bucks.
The fact is success means different things to different people. To try to judge people's success under a single standard is unrealistic, and pretty insulting. Maybe you're goal is to make lots of money even if you don't really enjoy what you do, there is nothing wrong with that. But for the rest of us who don't want to take a career path simply because there's lots of money at the end of the road, that's not success.
What is success? Success is what you make it. Don't let the standards of others influence you. Likewise, don't judge other people's success by your own values.