Back in the day, I would probably just replace the seat without too much grumbling. However, after limping into something of a forced retirement and now being on a fixed income with a very tight budget, I can't justify doing so for each and every thing that goes belly up these days. So I will either try and fix it or live with it.
And I suppose it's no use complaining about it, but this is yet another in a million of examples of the ever increasing disposable culture we live in. So much is produced in essentially a "use once & throw away" mentality, or a company's products (or their components) are so excessively outsourced or contracted out that no one knows which end is up. Then there are those who supposedly represent their companies who clearly don't know their own products, what goes into them, and where to get parts. We're pretty much well on the way to becoming a civilization that no longer has the knowledge of how our "machines" were built, how they operate, how to repair/adjust them, and the like. It's all pretty sad IMO.