Sometime maybe love isn't enough

Being a grown up is complicated. Where was the time when I'm free and careless. Was it last year, the year before or the year before that? Or the question should be: when was I ever free and careless
On the fact of being a grown up, I sometimes wish that we have nothing to worry about in life. Just live it. dont have worry about whether or not I have a job tomorrow, or money to spend, or food to eat. 
Sometimes, I want to QUIT science so bad. soo soo bad, like today. :-(