A lot of commenters here have made great points and I share their sentiments. Instead of repeating their good advice ad nauseam, I'd just like to add what I think is an important point: this is business, not personal.
It's pretty clear that you're carrying the whole team on your back. That's just a terrible situation to be in, and one I would never accept for myself. A team of cofounders that doesn't face reality is pretty much as bad as it gets in terms of startups. Not only are you the sole voice of reason, you're also the only person doing real work and adding actual value to the company. That may not be 100% true, but I bet it's true to a first or second order approximation.
The truth of the matter (and the truth of life) is, you need to look out for your best interests. There is no shame in doing this. It's the right thing to do. No one else, except maybe your parents, will ever care about your welfare and success. And frankly, that responsibility shouldn't fall on anybody else but you. Everyone else on this team is looking out for their own interests, why aren't you looking out for yours? Let me say out loud what you've been thinking: this is a train to nowhere. You owe it to yourself to find better opportunities. Your time on this planet is incredibly precious, don't waste it serving others for a reality you don't believe in.
It seems that you know deep in your heart what's best for you, but you're afraid to do it because you're worried about damaging these relationships. As other commenters have pointed out, there are ways to bow out gracefully. Are these cofounders really the type of people who would do malice to you for leaving for legitimate reasons? If so, that reflects much more poorly on them than it does on you.
You sound like a nice guy, which is awesome. I've been a nice guy my entire life, but I've learned the valuable lesson of how to say no (tactfully, of course, but always with confidence and strength). I hope you can come around to doing the same, because it will only benefit your life in all ways.
It's pretty clear that you're carrying the whole team on your back. That's just a terrible situation to be in, and one I would never accept for myself. A team of cofounders that doesn't face reality is pretty much as bad as it gets in terms of startups. Not only are you the sole voice of reason, you're also the only person doing real work and adding actual value to the company. That may not be 100% true, but I bet it's true to a first or second order approximation.
The truth of the matter (and the truth of life) is, you need to look out for your best interests. There is no shame in doing this. It's the right thing to do. No one else, except maybe your parents, will ever care about your welfare and success. And frankly, that responsibility shouldn't fall on anybody else but you. Everyone else on this team is looking out for their own interests, why aren't you looking out for yours? Let me say out loud what you've been thinking: this is a train to nowhere. You owe it to yourself to find better opportunities. Your time on this planet is incredibly precious, don't waste it serving others for a reality you don't believe in.
It seems that you know deep in your heart what's best for you, but you're afraid to do it because you're worried about damaging these relationships. As other commenters have pointed out, there are ways to bow out gracefully. Are these cofounders really the type of people who would do malice to you for leaving for legitimate reasons? If so, that reflects much more poorly on them than it does on you.
You sound like a nice guy, which is awesome. I've been a nice guy my entire life, but I've learned the valuable lesson of how to say no (tactfully, of course, but always with confidence and strength). I hope you can come around to doing the same, because it will only benefit your life in all ways.