Yes something I believe in might be more important than profit. But my point wasn't about whether I think students deserve discounts for some moral reason.

Student discounts are almost always a price discrimination mechanism aimed at maximising profits, rather than an altruistic gesture toward a disadvantaged group or an effort to encourage further learning. With that context, I thought the complaints of the author were strange. It's rational for him to refuse a student discount, but it's also rational for a student to ask for a discount, as there is no downside if the request is refused.

As to whether I would sell babies? Probably not. But if I were to sell babies for a living, I almost certainly wouldn't offer a student discount.