... That can't be healthy.
Probably not, but unfortunately I'd rather live my life hoping for something that doesn't exist and only having secret relationships than have pretty much my entire family shun me for being gay.
On being in the closet:
From personal experience, I understand where you are coming from and it most certainly does suck. I learned to live a double a life and lie very convincingly. I wouldn't come out until you are financially independent, which is what PFLAG recommends to reduce the impact of getting disowned if you ever do come out.
You slowly learn that there are some people worth being open with and women will become great friends. There are some pitfalls to watch out for with this. There's the chatty cathy who can't shut up, much less keep a secret. There's the idealist who thinks she knows better and that because gay people shouldn't have to put up with this shit, will out you with the best of intentions. Finally there are straight out bitches like my sister who blackmailed and extorted me (ORC 2905.11 Felony of the 3rd degree). You have to be careful who you trust, but there are wonderful people out there who will make good friends and can keep your secret.
Note that I talked about women, and this is because they tend to be more understanding than men. First, there is no sexual tension between the gay and the girl, at least from the gay (watch out for people trying to "turn" you). Second, many guys are a mixture of terrified and utterly pissed you might come onto them, this can be bad, very bad. There are straight guys out there who are smart enough and secure enough in their masculinity not to be threatened by your being gay, but they are unfortunately a minority.
It's a weird thing, and I've even had friends pretend to be that kind of girlfriend with me a few times to maintain the cover.
Now that I think about it, I'm not so sure being bigoted is a choice either. I've grown up around bigots all my life (thankfully not my direct family), and it seems bigotry towards homosexuality usually comes from finding the whole idea innately gross or appalling -- the bible stuff is usually just a way for people to validate that feeling. Now, being outwardly bigoted, that's a choice.
I was raised as a bigot and my mom and dad still are. My dad doesn't like black people, calls the president the N word when its just family around, thinks all Muslims are terrorists and should be shot (all of them), thinks all gays are pedophiles, believes everything he hears on fox news or talk radio, but knows enough to keep quiet in certain instances. When you are a very small child and your entire family is that way you emulate the behavior. I think upon hearing a 5 year old use the N word, most black people wouldn't be mad at the kid, but rather wonder who taught him that word.
Now I grew up and made a conscious choice and effort not to be that way. Granted, there can be a predisposition to be bigoted if your parents are, but it's something you can get over. It does take a crapton of work though.