I have a late 2013 2.3 GHz 15" MacBook Pro with the Haswell processor. I am having issues with a worn out track pad and aging battery and am being told by Apple that both need to be replaced. My MBP has the older keyboard style with all the multiple ports which I like. I'm apprehensive of the newer design with only the USB-C ports and the thinner keyboards. Also not sure about the Touchbar technology. I am trying to decide between repairing what I have (about $500), getting a refurbed mid 2015 (slightly better processor but same layout as my current MBP, about $2000) or biting the bullet for a new 2018 model (about $2400 refurbed). I am seeking opinions on anyone's guess on the lifespan of my current 2013? I am running current Mojave with no issues and am very happy with the speed. My thought is to ride out another 2-3 years if possible with my repaired current MBP and wait to see what changes Apple makes in the next few years. There seems to be a lot of unhappy users with the current design on the MBP. I just want to make sure I can get another few years from my model. I appreciate any thoughts or input.