I used to say that to my parents when I was a teenager.
To be honest now I am ashamed of saying such a thing.
My parents didn't ask to be born either and they never complained about their parents or God to me ever.
I just think its the height of arrogance to say such a thing now. (sorry but I do have some empathy for you) And isn't it the spoilt first world teenagers, who tend to say it? I mean, would Christians in poor countries say it?
Can you imagine if God spoke to us like this before our lives started?
"Now Paul, this is what your life is going to be like. You grow up in a nice first world working class family, not rich but very loving. You will suffer a lot of anxiety and self-doubt throughout your life. Its up to you if you want to make the most of it. Do you want it or not? I've got a spare life as a tortured Chrstian in a Muslim dominated country but you probably wouldn't like that , would you?"