I bought a MacBook Pro in 2010 that my brother is still using every day and works great. I have a Retina MacBook Pro I bought in 2012 that I used every day all day for work until earlier this year and I still use several times a week, and it still works flawlessly.

If your MacBook Pro is "dying" (what does that even mean? what component(s) are failing?) you should get it repaired. If you put up a stink they might even do it for free.