Train Moral Dilemma
I'm not married, but if I was (assuming it was a happy marriage, and those people didn't include my kids or something (which I don't have either), etc) than I'd never push her in front of the train.
You're going to need a big train to squash 7.6 billion people, at which point I don't think my wife would stop it.
I'd skin people alive to save my lover.
Don't confuse my loyalty for immorality.
If you're going to ask 'would you kill these friends to save these friends' then that is down to the very specific situation and it will make me cry to even think of that situation.
I wouldn't just straight up kill someone I knew to save someone close to me, I'd hesitate. The issue is how much the 'need' is a need.
If there is no other way, you have to make a decision. It isn't pretty, it isn't nice and it isn't what you want but in this world being nice only works with people who respond well to niceness... Sometimes you have to be that ruthless monster to remain happy in a world where ruthless monsters are a dime a dozen.
Pushing one in front of a train to save two is not morally enlightened, it is merely consistent utilitarianism, which is not a sufficient moral code for most situations.
I wouldn’t push my wife in front of the train to save people strapped to it, however many. I would save who I could and then kill the man who strapped them there. The moral issue is his.
Sorry, but there is no amount of people who could inspire me to push my wife in front instead. My wife and kids are the most important people to me in the world. And were I to lose her by doing that and then had to go home to face my kids and tell them what happened and why -- I would surely die.