Given that you are 20yo, I suspect that your parents did not know they were carriers. Another important question might be are you an only/first child and if not do you any of your siblings have CF? If you have brothers or sisters without CF that only reinforces that your parents were unaware of their carrier status.
Your situation seems to be loosely following the Kubler-Ross stages of grief. While you are not grieving over the loss of a loved one, you are grieving for yourself. Right now, you are in the anger stage. It's easier for you to blame your parents for what you have than accept it. Not everyone goes through the stages the same, but the point is that eventually you will be able to accept that you have CF and anything less than dealing with it is only going to hurt you.
Regarding your not having sat down and discussed this with your parents. How do you know how they will react until you actually sit down and chat with them? I think you know already that you are misplacing blame and that if you approach your parents, they will call you on it and tell you to "suck it up." So, instead you posted here looking for confirmation that you aren't the only one who blames their parents (or it's ok to blame your parents). However, I'm fairly confident that you won't find that confirmation here either.
To make an analogy, imagine that a loved one of yours died in a car crash as a passenger in a car with an intoxicated driver. You could react in several ways. You might be irate at the driver of the car for being irresponsible and driving under the influence, you might channel your anger and lobby for tougher DUI enforcement. However, the fact remains that your loved one is dead and none of these things is going to change that. Now, lets change perspective a bit. Put yourself in the driver's shoes. How would you feel? Would you want to sit down and have a chat with a relative of the person who died as a result of your carelessness? How do you think you would react if someone came to you with accusations that it was all your fault? Apply the answers to those questions to your parents. This scenario is "worst case" assuming your parents knew they were carriers.(i.e. the driver knew that he was intox. and took a risk, similarly, your parents knew they were carriers and took a risk). If they did not know, then you would have to substitute a scenario in which there is no apparent fault.
Hopefully, you will take from the posts here that the only real constructive thing to do is realize that it doesn't matter whether or not anyone was at fault. You have CF and until there is a cure you have no choice but to deal with it.
This probably won't be an easy or quick process for you. I wish you luck.
Your situation seems to be loosely following the Kubler-Ross stages of grief. While you are not grieving over the loss of a loved one, you are grieving for yourself. Right now, you are in the anger stage. It's easier for you to blame your parents for what you have than accept it. Not everyone goes through the stages the same, but the point is that eventually you will be able to accept that you have CF and anything less than dealing with it is only going to hurt you.
Regarding your not having sat down and discussed this with your parents. How do you know how they will react until you actually sit down and chat with them? I think you know already that you are misplacing blame and that if you approach your parents, they will call you on it and tell you to "suck it up." So, instead you posted here looking for confirmation that you aren't the only one who blames their parents (or it's ok to blame your parents). However, I'm fairly confident that you won't find that confirmation here either.
To make an analogy, imagine that a loved one of yours died in a car crash as a passenger in a car with an intoxicated driver. You could react in several ways. You might be irate at the driver of the car for being irresponsible and driving under the influence, you might channel your anger and lobby for tougher DUI enforcement. However, the fact remains that your loved one is dead and none of these things is going to change that. Now, lets change perspective a bit. Put yourself in the driver's shoes. How would you feel? Would you want to sit down and have a chat with a relative of the person who died as a result of your carelessness? How do you think you would react if someone came to you with accusations that it was all your fault? Apply the answers to those questions to your parents. This scenario is "worst case" assuming your parents knew they were carriers.(i.e. the driver knew that he was intox. and took a risk, similarly, your parents knew they were carriers and took a risk). If they did not know, then you would have to substitute a scenario in which there is no apparent fault.
Hopefully, you will take from the posts here that the only real constructive thing to do is realize that it doesn't matter whether or not anyone was at fault. You have CF and until there is a cure you have no choice but to deal with it.
This probably won't be an easy or quick process for you. I wish you luck.