With the new technology available to the miners and fabricators of granite
Many so-called "experts" advise re-applying stone sealers on an annual (or more frequent) basis - this is just not true. In actuality, there is no "calendar" for re-sealing, and over-application of sealer can build up over time and cause a haze on the surface of your countertops. The frequency for re-sealing depends on the type of stone installed and the amount of use that the countertops see. An easy "rule of thumb" is to closely monitor the area around the sink. If you begin to notice water that does not bead up or soaks into the stone within 10-15 minutes, then it's probably time to re-seal. Applying a sealer is easy, you can apply a liberal amount of sealer in the evening before going to bed and just let it penetrate and cure overnight. Sealers can be picked up at any "big box" hardware store.
Contrary to popular belief granite is not very expensive. With the new technology available to the miners and fabricators of granite, the cost of granite has dropped dramatically in the last few decades. Stone prices are now competitive and even lower than man-made options. Granite lasts longer than any other surface, not only for its durability but because it is not just the latest trend. Keep in mind, its been around and has been in use since, well, the Stone Age.