Lenovo, or any other manufacturer, will not keep producing gadgets for your exact same specification for the rest of your professional life. Actually, what they come up with in the first place was not designed by your specs, you got used to the gadget in time. Now it seems it's time to start using another one, getting familiar with it, and having some uncomfortable one or two weeks.
I don't feel it really applies here. Thinkpad are (were ?) tanks. Robustness people were willing to pay a premium. Now it feels like they just want the premium without the "too" expensive counterpart.
http://xkcd.com/1172/
Lenovo, or any other manufacturer, will not keep producing gadgets for your exact same specification for the rest of your professional life. Actually, what they come up with in the first place was not designed by your specs, you got used to the gadget in time. Now it seems it's time to start using another one, getting familiar with it, and having some uncomfortable one or two weeks.