Actually, Core Sets being released annually have a lot less of an impact as you might think, due to all the reprints. Sure, they release new cards and those are very good sometimes, so you end up buying them, but when they hit home, they usually reprint those anyway (as with the Titans and Baneslayer Angel). The rise in price for individual cards, on the other hand... THAT'S the real problem, as far as I'm concerned. And to make matters worse, even Magic Online prices are rising through the roof.