The comparison about game vs real life is not about killing each other, it's a semi-metaphor I used to evaluate your way of thinking. It's about the choice between two paths, work and fight versus be a beggar lazy peon. Simple. I thought you could understand that, but you talk about "killing people to real life", fine, not my problem anyway. I have no clue how much time will take, 5m or 2h, if you'll find a cute merciful guy around and give you cash, good for you, but you'll always be considered a beggar no matter what, and it's clearly not the most correct advice to give to new players. As skudy said, do encourage them to work for their stuff, that would be aces. Also, most players don't like beggars and they most likely add them on ignore list (I've heard lots of stories about that). Is that what you want?
Not to mention, on your journey from 1-80, you will always spend money for a lot of things, mounts, skills, repairs, possible items you might want to have from AH, and 50 gold is never enough. You will always have to keep collecting more and more so your leveling will be more efficiently (even after 80), so will you go SW and beg gold forever? Professions will always accompany you, and will definitely give you more than what you can imagine, even before 60, I've been there, several times.
So what if it takes more time? The outcome will be always better.