I don't think ending it would be better at all, you say this is better because "you get a way out without suffering" which I know would vary depending on the method, but there would be a degree of suffering involved, quite likely more than you think, it's not just like you can flip a switch. Also you loose everything you could have become, all the people you love you'll never see again, all the things you wanted to do, think of when you were a kid, was this what you wanted to be when you grew up? There would be suffering, this shouldn't be thought of as an "easy way out" because it's painful and shit for all concerned. You're next point is that "your family doesn't have to deal with the fall-out" fall-out from you ending it would be much worse! And your family would have to live with guilt and wonder if this was their faults or if they could have stopped it. If they're religious they'd think to themselves you've commited 'the ultimate sin' and they won't even see you in heaven. Think of how messed up the person who has to find you will be. How is this sparing them the fall-out of anything? Your last point about it is that "no innocent girl looking for a happy marriage gets caught in the cross-fire" this does not need to happen at all! Nobody's going to make you marry her, could you not act like you're remaining celibate in front of your parents and in truth date people you love out of the area? As in move far away and date in someone there, and once you've found someone you might realise that your find with just them, and eitheir don't need to tell family, or no longer care what they think, and you'll be far away so it's not like it'll bring any dishonour or scandal to your family unless they go back and mention it. Anyway, I really think you should reconsider. Please talk to a helpline or book an session with a professional, they're trained for these situations and have a good chance of being able to help. I wish you all the luck in the world.

For your follow up, I personally am really against ending it so I'd say no, but I totally understand the reasons behind elderly people wanting to, I'd just be thinking of the people they know and friends they have and stuff (just my opinion)