My co-worker just got the new Lenovo laptop, last about 12 hours. I'm pretty sure it's safe to say the lifespan of Macbooks has been matched and even improved by other brands.The build quality, extremely good battery life(which no laptop has so far), screen quality, OS X is actually pretty fast and stable(no weird bugs or lags) and the looks are actually appealing. Basically, if you buy a Mac, it'll last longer with you. There's literally nothing negative to say about the Mac's except for the fact that their prices are quite high, but it's worth it imo.
The negative is that the price does not match the hardware value. My GF just bought the latest iMac model, which comes with hardware manufactured late 2013. Kinda says it all.












