Is 3 Years Too Soon to get a new laptop?
I'm currently on Year 2 on my Sager NP 6165 and it has 40 minutes of battery. I also really hate the mousepad; it hurts to use it.
Lenovo Y50 looks really good. It has no Disc Drive, which I never use, and 4K resolution monitor, although I doubt its graphics can support modern day 4K gaming.
I try to upgrade every 2 to 3 years, myself, based on when knew GPU architectures come out.
The Y50 SKU with the 4k screen is probably going to be as expensive as a laptop with a much faster GPU, which makes me wary of such a choice. Lenovo has said we won't get the price until the machine is released.
As far as the NP6165, you can get a new battery from eBay for very little.