why so many new versions so fast

Am I the only one that finds this just a tad bit comical? You don’t exactly have to be the Rockefellers to afford an upgrade that might cost $100-$200 every year and a half or so… I mean, is money really THAT tight? Skip a couple dinners out or a few dates at the movies these days and bam, you can afford the upgrade. It really just seems like such a trivial bone to pick for what are in some cases huge innovations in workflow and changes that make our life as users easier. And again… if it’s REALLY breaking your bank… no one is forcing you, just don’t upgrade. There is nothing stopping you from staying on the same platform you are currently on… Is this seriously a major concern?