Well if you want to pay 2015 prices for 2012 tech, that's your choice.
The issue is that I work in the education industry, and so many students pay £600+ to upgrade to a Mac, because they hear so many good things about them. Most consumers will go for the cheapest model without knowing how poorly outdated it is. Then I'll get complaints about a £1000 Apple laptop running like a £200 Windows PC.
Apple always say that 'we make the decisions for the consumers' - they go on, and on, about how people buy into Apple products because they trust the quality and the experience, etc etc. Well people aren't getting that with the base 13" MacBook Pro, and personally I think Apple aren't doing all they can to either educate their buyers on what they're buying, or are doing everything they claim to give people the flawless Apple experience.
You're in the 1% where you love an upgradeable laptop. The other 99% are people who shouldn't be getting a crappy experience from a £1000 laptop, because it's only got 4GB RAM, a 2-3gen old processor, a non-Retina display, and a 5400rpm HDD.
So yes, I really, really hope Apple discontinue it. Maybe make it available on request for the people who want to buy it, who know what they're doing.